Atopic dermatitis, commonly referred to as eczema, is a chronic skin condition that causes patches of itchy, dry, and red skin. Symptoms of atopic dermatitis vary in severity, but typically involve red, itchy, dry patches of skin that can become scaly and inflamed. Common triggers of atopic dermatitis include stress, environmental allergies, and certain fabrics.

The exact cause of atopic dermatitis is unknown, but it is often linked to a family history of allergies and asthma. It is also believed to be caused by a combination of genetic and environmental factors, such as exposure to certain allergens or irritants.

Diagnosis of atopic dermatitis is usually made based on a physical examination, patient history, and laboratory tests. A doctor may also use a skin patch test to determine if a certain allergen is causing the symptoms.

Treatment for atopic dermatitis is aimed at reducing inflammation and itchiness. Treatment options may include topical medications, oral medications, light therapy, and lifestyle changes. It is important to find the right combination of treatment that works for the individual, as treatments may vary from patient to patient.

Psoriasis is a chronic skin disorder that causes cells to build up rapidly on the surface of the skin, forming thick, scaly patches. Common signs and symptoms of psoriasis include red patches of skin, scaling, itching, burning, and soreness. In some cases, the patches may crack, bleed, and produce a discharge. In more severe cases, psoriasis can cause the skin to thicken and form raised plaques.

Diagnosis of psoriasis is based on a physical examination and the patient's medical history. The diagnosis may also involve a skin biopsy, in which a sample of skin is taken and examined under a microscope. Treatment of psoriasis may include topical medications, such as corticosteroids, vitamin D analogues, or retinoids, as well as systemic medications, such as methotrexate, cyclosporine, or biologic agents.

Eczema is a skin condition characterized by dry, itchy, and inflamed skin. Common symptoms of eczema include red or brown patches on the skin, dry, scaly patches, and intense itching. In more severe cases, open sores and blisters can form. Diagnosis of eczema is typically done through a physical examination and medical history. Treatment typically includes moisturizers, anti-itch medicines, steroid creams, and other therapies. In some cases phototherapy may also be recommended.

Skin diseases can range from minor irritations to serious conditions that require medical attention. This list of the top 10 skin diseases highlights the most common skin conditions that affect people of all ages.

1. Acne – one of the most common skin diseases, acne is caused by the overproduction of sebum and the blockage of hair follicles. It is characterized by pimples, blackheads, and whiteheads.

2. Eczema – this skin condition causes red, itchy rashes to appear on the skin. It can be treated with topical creams and ointments.

3. Psoriasis – a chronic disease, psoriasis is characterized by red, scaly patches on the skin. It is usually treated with topical medications or phototherapy.

4. Rosacea – this chronic skin condition causes redness, bumps, and pimples on the face. It is usually treated with antibiotics.

5. Warts – caused by a virus, warts are raised, fleshy bumps that can appear anywhere on the body. They can be treated with cryotherapy or topical medications.

6. Ringworm – a fungal infection, ringworm appears on the skin as a circular, red rash. It is treated with antifungal creams.

7. Shingles – caused by the same virus that causes chickenpox, shingles is characterized by painful, blister-like rash. It is treated with antiviral medications.

8. Hives – this skin condition is caused by an allergic reaction and is characterized by itchy, red bumps. It is treated with antihistamines.

9. Cold sores – caused by the herpes virus, cold sores are small, fluid-filled blisters that appear around the mouth. They can be treated with antiviral medications.

10. Skin cancer – this is the most serious skin disease and is characterized by abnormal growths on the skin. It can be treated with surgery, radiation, or chemotherapy.