eczema specialist tests overview

Overview

Eczema (also called atopic dermatitis) is a common skin condition that makes your skin dry, itchy, and red. It is caused by a combination of genetics and a problem with the skin’s natural barrier, which normally keeps moisture in and irritants out.

Yes, eczema is one of the most common skin conditions. It affects millions of people around the world, including many children.

Eczema can affect anyone, but it most often starts in babies and young children. Many children outgrow it, but for some it continues into adulthood. It also tends to run in families, especially those with allergies or asthma.

Symptoms

Common symptoms

• Dry, sensitive skin
• Intense itching, especially at night
• Red, inflamed patches of skin
• Small raised bumps that may leak fluid when scratched
• Thickened, cracked, or scaly skin

Symptoms in children

• Rash usually appears on the face, scalp, and outer arms and legs
• Skin may weep (ooze clear fluid) or form crusts
• Babies may rub against bedding to relieve the itch

Symptoms in older adults

• Very dry, scaly skin that can crack easily
• Rash often on the hands, neck, inner elbows, and back of the knees
• Itching can be severe and lead to sleep problems

Causes

Main causes

• A defect in the skin barrier that lets moisture out and irritants in
• An overactive immune system that reacts to triggers like allergens or stress
• Genetic factors – certain genes make you more likely to have eczema

Risk factors

• Family history of eczema, allergies, hay fever, or asthma
• Living in a dry or cold climate
• Having asthma or food allergies
• Exposure to certain irritants (soaps, detergents, wool, dust mites)

When to see a doctor

See a doctor urgently if:

• Signs of skin infection (fever, spreading redness, pus)
• Sudden severe pain or swelling in the rash

Book a routine appointment if:

• Your eczema is not getting better with over-the-counter moisturizers and gentle care
• Itching keeps you awake or interferes with daily life
• You want to discuss prescription treatments or allergy tests

Diagnosis

Doctors usually diagnose eczema by looking at your skin and asking about your symptoms and family history. They will also check for other conditions like psoriasis or allergic reactions.

Tests that may be done

• Patch test – small patches with common allergens are placed on your skin to see if you have a contact allergy
• Skin prick test – tiny amounts of possible allergens are placed on your forearm to check for immediate allergic reactions
• Skin biopsy – a small sample of skin is taken and looked at under a microscope, mainly if the diagnosis is uncertain

What to expect at your appointment

Your doctor will ask about the itch, about anything that makes it worse, and about your personal and family history of allergies. They will examine your skin carefully. If they suspect another skin condition or an allergy, they may suggest a patch test or other allergy tests. The process is usually painless and done in the office.

Treatment

Treatment focuses on repairing the skin barrier, reducing inflammation, and avoiding triggers. It is a step-by-step plan that starts with good skin care and adds medicines as needed.

Self-care at home

• Moisturize your skin at least twice a day with a thick, fragrance-free cream or ointment (emollient)
• Use gentle, fragrance-free cleansers and avoid harsh soaps
• Take short, lukewarm baths or showers and pat dry gently
• Identify and avoid personal triggers like wool, certain foods, or stress

Medical treatments

When self-care is not enough, doctors may prescribe creams or ointments to reduce inflammation and itching. These include topical corticosteroids (different strengths for different areas), topical calcineurin inhibitors, and sometimes light therapy (phototherapy). For severe eczema, oral or injectable medications that calm the immune system may be used. Your doctor will recommend the safest option for your specific situation. Always follow the instructions exactly and never use more than prescribed.

When is surgery considered?

Surgery is not a treatment for eczema. However, in very rare cases of severe infection (like deep skin abscesses), a procedure to drain fluid may be needed.

Living with this condition

Living with eczema means making skin care a daily habit. Apply moisturizer every day, keep your nails short to avoid damage from scratching, and stay cool. Carry a small travel-size moisturizer for touch-ups when you’re out.

Lifestyle tips

• Choose soft, breathable fabrics like cotton – avoid wool and synthetics
• Use a humidifier in dry rooms to add moisture to the air
• Manage stress with relaxation techniques, because stress can trigger flares
• Avoid overheating and sweating heavily

Diet and exercise

There is no special diet for eczema unless you have a diagnosed food allergy. If you think a food triggers your eczema, keep a diary and talk to a doctor. Exercise is good for you, but shower right after to wash off sweat, which can irritate the skin.

Mental health and emotional wellbeing

Eczema can affect how you feel about your appearance and may cause stress, anxiety, or low mood. The constant itching can also wear you down. It is important to talk about these feelings with someone you trust, a counselor, or your doctor. If you feel overwhelmed or have thoughts of harming yourself, reach out for help immediately – your local emergency number or a crisis helpline can help.

Prevention

Eczema itself cannot be prevented, but you can reduce how often and how severe your flares are by following a consistent skin care routine and avoiding known triggers. Starting good moisturizing habits early in life may help lower the risk in children with a family history.

Complications

If left untreated

• Skin infections caused by scratching (bacterial or viral)
• Sleep problems from constant itching
• Long-term thickening and darkening of the skin in affected areas
• Emotional problems like frustration, embarrassment, or depression

Long-term outlook

With the right care, most people can control their eczema and lead a normal, active life. The condition often improves with age, especially in children. Even if flares happen from time to time, you can learn to manage them and keep your skin comfortable.

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