What You Should Know About Common Skin Rashes

Skin rashes may look similar at first glance, but there are many different types, each with their own causes, symptoms, and treatments. Most rashes involve some form of inflammation and irritation. While not usually life-threatening, they can lead to discomfort or self-consciousness for many people.

Understanding what causes a rash is important, since each type often needs a unique approach. If you’re unsure, seeing a dermatologist is the best way to get an accurate diagnosis and effective treatment.

Atopic Dermatitis

Atopic dermatitis is one of the most common causes of skin rashes. It usually appears as itchy, red patches that may flare up throughout your life. During active stages, you might notice blisters, thickened skin folds, and scaling.

This condition often runs in families with a history of allergies or asthma. Environmental and dietary triggers may also play a role.

Psoriasis

Psoriasis is a chronic skin disease with a strong genetic and autoimmune component, affecting about 2% of people worldwide. It usually shows up as itchy, red, and clearly defined plaques covered in silvery scales. These plaques can merge and sometimes cover large areas, especially on the trunk, scalp, and outer surfaces of the arms and legs.

Allergic Contact Dermatitis

Allergic contact dermatitis happens when your skin comes into direct contact with a specific allergen. Common triggers include perfumes, costume jewelry, hair dyes, and certain cosmetics. The rash tends to affect only the area that touched the substance, and symptoms can include redness, swelling, intense itching, fluid-filled blisters, or scabs.