Dry Skin Eczema Treatment | Dermatology Outpatient Clinic

😰「What are the symptoms of asteatotic eczema？」
😟「What should I do if I develop asteatotic eczema？」

✨ Just 5 minutes with this article and you’ll understand everything about the causes of uncomfortable itching and dry skin — and how to address them properly!

⚠️ Left untreated, the condition can worsen, raising the risk of nummular eczema and bacterial infection…

Asteatotic eczema (xerotic eczema) is a type of eczema that tends to occur more frequently during the dry winter months.

📖 This article covers the causes and symptoms of asteatotic eczema, as well as treatment options and preventive measures, in thorough detail.

🔍 What Is Asteatotic Eczema?

Asteatotic eczema is a type of eczema with itching that occurs when the skin’s protective film is damaged by dryness and similar factors, making the skin more susceptible to external irritants.

📅 While it can develop at any time of year, the incidence tends to increase during the dry winter months.

👶👴 Although asteatotic eczema can affect people of all ages, children whose sebaceous glands are not yet fully developed and older adults tend to experience higher rates of occurrence.

⚠️ Scratching can worsen symptoms, so it is important to avoid touching the affected area after onset.

❓ Why Does Asteatotic Eczema Occur? Causes of Asteatotic Eczema

💧 Asteatotic eczema is caused by dry, rough skin.

🔸 There are many causes of dryness, but a common one is reduced sebum secretion as a result of aging, which leads to dry skin.

🔸 In addition, decreased synthesis of lipids such as ceramide—which fill the gaps in the stratum corneum—and amino acids, the main components of natural moisturizing factors, can also contribute to skin dryness.

🛡️ In particular, the outermost layer of the skin, known as the stratum corneum, plays a key role in retaining moisture and protecting the skin from external stimuli through its barrier function.

😖 However, when dryness prevents the stratum corneum from retaining adequate moisture, this barrier function is weakened, making the skin more prone to itching even from minor irritation.

🏠 Asteatotic eczema can also be triggered by lifestyle and environmental factors, such as over-washing the body, reduced indoor humidity due to air conditioning use, and conditions such as atopic dermatitis.

😣 What Are the Symptoms of Asteatotic Eczema?

📋 Asteatotic eczema may present with the following symptoms.

• 💧 Dry skin
• 🔲 Cracking
• 😖 Itching
• ❄️ Flaking

🌙 Itching tends to intensify in the evening and at night, or when blood circulation improves.

🛁 As a result, itching is often more pronounced when in a heated room, during bathing, or while in bed under a futon.

⚠️ Scratching the skin in response to itching can cause inflammation, leading to redness or the appearance of a rash—so be careful not to scratch even when it feels itchy.

🪙 Additionally, when asteatotic eczema worsens, it is not uncommon for it to progress to nummular eczema, which presents as coin-shaped, reddish rashes.

💥 Nummular eczema tends to cause more intense itching than asteatotic eczema.

🦠 Vigorous scratching can create wounds that allow bacteria to grow and cause infection, so it is advisable to seek treatment as early as possible.

✨ How Can Asteatotic Eczema Be Prevented?

💡 There are three key preventive measures for asteatotic eczema:

• 🧴 Moisturize with cream or gel
• 🛁 Take short, lukewarm baths
• 💨 Pay attention to indoor humidity

Each of these measures is explained in detail below for your reference.

🧴 Prevention Method (1): Moisturize with Cream or Gel

The most important step in preventing asteatotic eczema is keeping the skin moisturized.

⏰ Apply a moisturizer such as cream or gel to the skin within approximately five minutes after bathing.

💉 However, if visible symptoms such as a rash are already present, treatments such as steroid injections may be required.

📌 It is important to understand that moisturizers such as creams and gels are intended to hydrate the skin and maintain its condition, and are not a substitute for medical treatment.

🛁 Prevention Method (2): Take Short, Lukewarm Baths

Another important preventive measure for asteatotic eczema is to bathe in lukewarm water and keep bath time short.

🌡️ Water that is too hot can strip away the sebum that protects the skin’s surface.

🧼 It is also important to minimize skin irritation during bathing by avoiding vigorous scrubbing with a nylon towel and rinsing off body wash, shampoo, and other products thoroughly.

💨 Prevention Method (3): Pay Attention to Indoor Humidity

Another important preventive measure for asteatotic eczema is to pay attention to the humidity in your living environment.

🌵 Dry indoor air can reduce skin moisture levels and lead to itching.

🏠 For this reason, it is important to be mindful of air conditioner use and use a humidifier when needed to maintain a comfortable level of humidity.

💊 How Is Asteatotic Eczema Treated?

🩹 The basic approach to treating asteatotic eczema is moisturization.

⚠️ However, if severe itching or a rash is present, appropriate medical treatment at a clinic or hospital will be necessary.

🏥 There are cases where people assume they simply have dry skin, only to find upon examination that they have asteatotic eczema.

For this reason, if you experience symptoms such as dryness, itching, or a rash, it is advisable to have a doctor evaluate the condition.

💊 What Medications Help with Asteatotic Eczema?

📋 The following medications may be used for asteatotic eczema:

🧴 Moisturization and skin coating play important roles in the treatment of asteatotic eczema.

💡 As a result, many prescribed medications contain ingredients with high moisturizing and protective properties.

🛒 How to Choose Over-the-Counter Medications for Asteatotic Eczema

Below, we introduce how to choose over-the-counter medications for asteatotic eczema.

⚠️ Once asteatotic eczema has progressed, over-the-counter medications may not be sufficient to manage it.

💡 However, the precursor condition known as “xerosis cutis” (dry skin) may respond to over-the-counter moisturizers, potentially alleviating symptoms.

🧴 Moisturizers serve to coat the skin surface to prevent dryness and to supply the skin with moisture.

🏥 Many moisturizers commonly prescribed at clinics and hospitals contain ingredients aimed at moisturizing and protecting the skin.

📌 Options include cream formulations and emulsion-type lotions that combine moisturizing and protective ingredients, as well as white petrolatum, which is composed purely of protective ingredients. Since these products differ in texture and feel, it is a good idea to choose based on the area of application, the season, and personal preference.

✋ How to Apply Medication for Asteatotic Eczema

Below, we explain how to apply medication for asteatotic eczema.

💊 Apply the medication following these two main steps:

• 🤲 Wash your hands thoroughly, then take out the appropriate amount of moisturizer.
• ✋ Apply gently and carefully along the skin’s natural creases.

📏 The appropriate amount is enough for a tissue to adhere to the skin, or for the skin to have a slight sheen. 👶 When applying to children, try massaging it in gently.

❓ Frequently Asked Questions about Asteatotic Eczema

Below are answers to frequently asked questions about asteatotic eczema.

🏥 For Asteatotic Eczema Treatment in Tokyo, Consult IC Clinic

Asteatotic eczema is a condition that can affect anyone as a result of dry skin. Because it tends to progress gradually, it can become more severe before a person realizes it, which is why early intervention is considered important.

✨ IC Clinic strives to be a welcoming clinic where patients of all ages and backgrounds feel comfortable seeking help.

💬 No matter what symptoms you are experiencing, we will work with you to suggest a treatment approach that feels right for you. If you are troubled by dryness or itching, please do not hesitate to reach out to IC Clinic.

📊 Types of Asteatotic Eczema Symptoms and Stages of Progression

🔰 Early-Stage Symptoms

Asteatotic eczema is a condition that progresses in stages. In the early stage, the skin surface begins to feel dry and rough, and when touched it takes on a powdery, flaking appearance. At this stage, a clear rash is not yet visible, but the skin loses its luster and feels rough to the touch.

📍 Symptoms often first appear on the outer elbows and shins, with dryness progressing from areas prone to friction with clothing. Taking appropriate care during this period can help prevent the condition from becoming more severe.

⚠️ Mid-Stage Symptoms

As the condition progresses, fine cracks begin to form on the skin surface. These cracks can create a distinctive pattern known as “crazy paving desquamation” (kikkōjō rakusetsu). 🐢 A hexagonal pattern resembling a tortoiseshell appears on the skin surface, with the borders turning white and powdery.

😖 At this stage, mild itching begins to appear, and itching is increasingly felt, particularly at night and after bathing. The skin also loses elasticity, and when gently stretched, it may remain whitish and take longer to return to its original state.

🚨 Severe-Stage Symptoms

When asteatotic eczema becomes severe, a rash with redness appears along with intense itching. At this stage it may be referred to as “asteatotic dermatitis.” Scratching can break the skin, creating wounds and significantly increasing the risk of bacterial infection.

🪙 In more severe cases, the condition can progress to “nummular eczema,” characterized by round, well-defined rashes. When this occurs, itching becomes very intense and the symptoms may interfere with daily life.

👶👵 Characteristics and Management of Asteatotic Eczema by Age Group

👶 Asteatotic Eczema in Infants and Toddlers (Ages 0–2)

In infancy and toddlerhood, the sebaceous glands are not yet fully developed, making this an age group prone to asteatotic eczema. In particular, sebum secretion temporarily decreases after approximately 3 months of age, making eczema caused by dryness more likely to occur.

💧 An infant’s skin is only about half the thickness of an adult’s and has a lower capacity for retaining moisture. In addition, because the body’s temperature regulation system is still immature, changes in room temperature can have a significant impact on the skin.

🧸 Management Tips for Infants and Toddlers

• 🌡️ Keep bath water temperature at approximately 38–40°C
• 🧴 Choose moisturizers that are fragrance-free and dye-free
• 👀 Observe carefully to avoid confusing the condition with diaper rash
• 💨 Consider using a humidifier to prevent dryness caused by air conditioning

🎒 Asteatotic Eczema in School-Age Children (Ages 3–12)

As children enter school age, the sebaceous glands become more developed, reducing the frequency of asteatotic eczema compared to infancy. However, it can still develop due to a history of atopic dermatitis, exposure to chlorine in swimming pools, or irritation from sweat after physical activity.

✨ School-age children’s skin is characterized by active cell turnover, meaning that with appropriate care, improvement can be expected within a relatively short period of time.

🏫 Management Tips for School-Age Children

• 🧼 Take care not to overuse soap or body wash
• 🏊 After swimming, always rinse off chlorine in the shower
• 👕 Change clothes promptly after sweating
• ✂️ Keep nails trimmed short to prevent scratching the skin

🎓 Asteatotic Eczema in Adolescents and Young Adults (Ages 13–30)

In this age group, sebum secretion is at its most active, making the occurrence of asteatotic eczema least common. However, it can still develop due to excessive face washing or use of body wash or the use of inappropriate skincare products.

😰 Additionally, stress from exams or job hunting can weaken the skin’s barrier function and trigger asteatotic eczema.

💼 Management Tips for Adolescents and Young Adults

• 🧴 Avoid facial cleansers or body washes with overly strong cleansing power
• 😌 Manage stress appropriately
• 😴 Avoid sleep deprivation and maintain a regular lifestyle
• 🍂 Take extra care with skincare during seasonal transitions

🧑 Asteatotic Eczema in Middle-Aged Adults (Ages 31–64)

From middle age onward, sebum secretion gradually begins to decrease, raising the risk of developing asteatotic eczema. In particular, women going through menopause may experience reduced skin moisture retention due to declining female hormone levels, making the skin more prone to dryness.

💼 Additionally, increased frequency of hand washing due to work or household duties, stress, and irregular lifestyle habits can also contribute to asteatotic eczema.

🌟 Management Tips for Middle-Aged Adults

• 🧴 Review and update skincare products to suit your age
• 🤲 Always moisturize with hand cream after washing your hands
• 😌 Manage work-related stress appropriately
• 🏥 Receive regular skin check-ups at a dermatology clinic

👴👵 Asteatotic Eczema in Older Adults (Age 65 and Over)

Older adults are the age group most prone to developing asteatotic eczema. With aging, the function of the sebaceous and sweat glands declines, and the moisture-retaining capacity of the stratum corneum also decreases substantially. Furthermore, skin cell turnover slows down, meaning that once the condition develops, recovery tends to take longer.

⚠️ The skin of older adults is thinner and more prone to injury even from minor stimulation, making especially careful care necessary.

🌸 Management Tips for Older Adults

• 🧴 Make moisturizing after every bath a daily habit
• 🛁 Shorten bath time and set the water temperature lower
• 👕 Wear cotton clothing that is gentle on the skin
• 💨 Keep indoor humidity at 50–60%
• 🏥 Receive regular skin check-ups from a physician

🌸🌻❄️🍂 Seasonal Skincare for Asteatotic Eczema

🌸 Spring Skincare Tips (March–May)

Spring is a season with significant temperature fluctuations and high levels of allergens such as pollen. Asteatotic eczema that worsened during winter may change in presentation with sudden rises in temperature. Additionally, the stress and environmental changes that come with a new start in life can also affect the skin.

🌷 Spring Care Points

• 🧥 Layer clothing to adjust to morning and evening temperature differences
• 🚿 After going outdoors, rinse off pollen in the shower to prevent it from adhering to the skin
• 🧴 Consider switching to a lighter-textured moisturizer
• ☀️ Begin UV protection to minimize stimulation to the skin

🌻 Summer Skincare Tips (June–August)

Summer’s high humidity tends to ease asteatotic eczema symptoms, but indoor dryness caused by air conditioning and skin irritation from sweat can become new concerns. UV damage to the skin can also worsen asteatotic eczema.

🏖️ Summer Care Points

• ❄️ Adjust the air conditioner temperature appropriately and take care not to over-dehumidify
• 💦 Shower regularly after sweating to maintain cleanliness
• 🧴 Use a light-textured moisturizer to avoid a sticky feeling
• 🧴 Apply sunscreen to protect the skin from UV rays
• 👕 Choose breathable clothing to minimize friction

🍂 Autumn Skincare Tips (September–November)

Autumn is a season when humidity gradually begins to drop, making asteatotic eczema more likely to recur. Even if symptoms were mild during summer, a rapid drop in humidity can cause them to worsen. Starting preventive care during this period is key to reducing symptoms in winter.

🍁 Autumn Care Points

• 🧴 Switch to a moisturizer with higher moisturizing power
• 🔥 Prepare humidification measures as heating devices begin to be used
• 👕 When changing to seasonal wardrobes, choose cotton items for clothing that directly touches the skin
• 🛁 Begin shortening bath time and lowering water temperature

❄️ Winter Skincare Tips (December–February)

Winter is the season when asteatotic eczema is most likely to occur and most likely to become severe. Indoor dryness from heating and the cold of the outside air cause the skin to rapidly lose moisture. Friction from thick clothing can also worsen symptoms.

⛄ Winter Care Points

• 🧴 Make moisturizing 2–3 times a day a habit
• 💨 Use a humidifier to keep indoor humidity at 50–60%
• 🔥 Avoid direct airflow from heating devices
• ⏰ Apply moisturizer within 5 minutes after bathing
• 👕 Wear a cotton inner layer under thick clothing

🍽️ Beneficial Nutrients and Dietary Approaches for Asteatotic Eczema

💊 Key Nutrients for Skin Health

For the improvement and prevention of asteatotic eczema, nutrition from within is just as important as topical skincare. The following nutrients in particular are essential for maintaining healthy skin.

🐟 Essential Fatty Acids (Omega-3 and Omega-6)

These are important nutrients that form the cell membranes of the skin and help maintain its barrier function. They are found in abundance in oily fish, flaxseed oil, perilla oil, and walnuts. These fatty acids may help reduce skin inflammation and improve moisture-retaining capacity.

🥕 Vitamin A

Vitamin A promotes skin cell turnover and supports the normal formation of the stratum corneum. It is found in abundance in liver, carrots, spinach, and pumpkin. A deficiency in vitamin A can cause dry skin and abnormal keratinization, worsening asteatotic eczema.

🥑 Vitamin E

Vitamin E has antioxidant properties that may help protect skin from aging and support circulation. It is found in abundance in almonds, sunflower oil, avocado, and pumpkin. It also plays a role in protecting skin cell membranes and shielding the skin from external stimuli.

🦪 Zinc

Zinc supports the activity of enzymes necessary for skin regeneration and repair. It is found in abundance in oysters, red meat, soy products, and nuts. Since zinc deficiency can worsen dermatitis and delay wound healing, adequate intake is important.

🚫 Foods and Lifestyle Habits to Avoid

Certain foods and lifestyle habits may worsen asteatotic eczema. Understanding these and being mindful of them in daily life can help improve symptoms.

🍺 Alcohol and Irritants

Alcohol can deplete the skin of moisture and dilate blood vessels, potentially intensifying itching. Heavily spiced foods and extremely hot foods can also act as irritants to the skin.

🍬 Excessive Sugar Intake

Excessive consumption of sugar is known to promote glycation of the skin and impair collagen function, which can lead to a loss of skin elasticity and a weakening of its barrier function.

🍔 Excessive Consumption of Processed Foods

Processed foods high in additives and preservatives may promote inflammatory responses in the body and worsen dermatitis. Aim to cook with fresh ingredients as much as possible.

🍱 Suggested Meal Plan for Improving Asteatotic Eczema

🌅 Recommended Breakfast Menu

• 🐟 Grilled salted oily fish (mackerel, sardines)
• 🥕 Boiled carrot and spinach with seasoning
• 🍚 Brown rice
• 🍲 Miso soup (with wakame seaweed and tofu)

🌞 Recommended Lunch Menu

• 🐟 Sautéed salmon (cooked in olive oil)
• 🥑 Avocado and tomato salad
• 🎃 Simmered pumpkin
• 🍞 Multigrain bread

🌙 Recommended Dinner Menu

• 🍔 Tofu hamburger steak (soy product)
• 🥕 Kinpira gobo (burdock root stir-fry with sesame oil)
• 🥗 Salad with nuts
• 🥫 Fermented foods (natto, kimchi, etc.)

🔬 Differentiating Asteatotic Eczema from Similar Skin Conditions

🔍 Differences from Atopic Dermatitis

Asteatotic eczema and atopic dermatitis have similar symptoms and are sometimes confused with each other. However, there are clear differences between the two.

👶 Differences in Age of Onset

Atopic dermatitis often develops in infancy and early childhood, with symptoms changing as the child grows. Asteatotic eczema, on the other hand, is more common in older adults and is primarily caused by dryness.

📍 Differences in Affected Areas

Atopic dermatitis tends to affect the face, neck, inner elbows, and backs of the knees—flexural areas of the joints, while asteatotic eczema tends to appear in areas with lower sebum secretion such as the outer elbows, shins, and back.

😖 Differences in the Nature of Itching

The itching of atopic dermatitis is persistent and intense, particularly worsening at night. The itching of asteatotic eczema appears in association with dryness and is often relieved by moisturizing.

🔍 Differences from Contact Dermatitis

Contact dermatitis is a skin inflammation triggered by contact with a specific substance, and symptoms improve when the causative substance is avoided. Asteatotic eczema, where dryness is the primary cause, is unrelated to contact with any specific substance.

📍 Differences in How Symptoms Appear

Contact dermatitis presents with symptoms only at the site of contact with the causative substance, with clear boundaries. Asteatotic eczema presents with widespread symptoms across areas of the body prone to dryness.

🔍 Differences from Seborrheic Dermatitis

Seborrheic dermatitis develops in areas with high sebum secretion (such as the scalp and the T-zone of the face) and is caused by the opposite of what causes asteatotic eczema.

📍 Differences in Affected Areas

Seborrheic dermatitis develops in areas with high sebum secretion, whereas asteatotic eczema develops in areas with low sebum secretion that are prone to dryness.

🏠 Daily Lifestyle Tips to Prevent Asteatotic Eczema from Worsening

🛁 Bathing Precautions

⏰ Appropriate Bathing Frequency and Duration

Bathing too frequently can strip away too much of the skin’s protective barrier, so bathing once a day for approximately 10–15 minutes is considered appropriate. Since skin moisture evaporates rapidly after bathing, it is important to apply moisturizer within 5 minutes.

🧼 How to Choose and Use Soap and Body Wash

Choose mildly acidic soaps or body washes with few additives. Lather the product well with a foam net and wash gently with your hands. ⚠️ Avoid using nylon towels or brushes as they can irritate the skin.

🛁 Effective Use of Bath Additives

Bath additives with moisturizing effects or those containing ceramide may be helpful in relieving asteatotic eczema symptoms. However, care should be taken with bath additives that contain high levels of fragrance or colorants, as these may irritate the skin.

👕 The Importance of Clothing Choices

🧵 The Impact of Fabric

The fabric of clothing that directly touches the skin significantly affects asteatotic eczema symptoms. 100% cotton clothing is highly absorbent and breathable, and causes minimal irritation to the skin, making it the ideal choice.

🚫 Fabrics to Avoid

Wool and synthetic fabrics (nylon, polyester, etc.) are more likely to irritate the skin and generate static electricity, so it is advisable to avoid them. Always wash new clothing before wearing it, and use fabric softener sparingly.

🧺 Laundry Precautions

Residual detergent can irritate the skin, so rinse thoroughly and add an extra rinse cycle if possible. It is also important to keep the use of fabric softener and bleach to a minimum.

🏠 Maintaining a Suitable Living Environment

💨 The Importance of Humidity Control

Indoor humidity directly affects asteatotic eczema symptoms. The ideal indoor humidity level is 50–60%. Install a hygrometer and aim to maintain an appropriate level of humidity at all times.

🔥 How to Choose and Use Heating Devices

Kerosene heaters and gas heaters generate water vapor during combustion, making them gentler on the skin than electric heaters or air conditioners. If using an air conditioner, combine it with a humidifier and take care that the direct airflow does not hit the skin.

🛏️ Choosing Bedding

The fabric of blankets and duvet covers can also affect the skin. Choose natural materials such as cotton or linen, and wash them regularly to keep them clean. If using an electric blanket, be sure to moisturize thoroughly, as it can accelerate skin dryness.

💡 Summary: Living Well with Asteatotic Eczema

Asteatotic eczema is a common skin condition that many people in modern society experience. However, by acquiring the right knowledge and care skills, it is possible to manage symptoms and maintain a comfortable daily life.

✅ Key Points to Remember

1. 🏥 The importance of early detection and early treatment
2. 🧴 The need for consistent skincare
3. 💡 Establishing a care routine suited to each individual
4. 🏥 Appropriate collaboration with medical professionals
5. 🏠 Maintaining a suitable living environment

Rather than aiming for a complete cure, with asteatotic eczema it is more important to manage symptoms effectively and maintain quality of life. Rather than struggling alone, seek support from medical professionals and specialists to find the care approach that works best for you.

🔬 Treatment methods and research findings are advancing every day, and more effective, less burdensome treatments are expected to be established in the future. If you are currently troubled by symptoms, please approach your treatment with hope.

✨ With appropriate treatment and care, it is possible to minimize the impact of asteatotic eczema on daily life and enjoy healthy, comfortable days. If you have any concerning symptoms, start by consulting a specialist to establish a treatment plan suited to your individual needs.