A scaly rash on an arm

Allergic Contact Dermatitis

Allergic contact dermatitis, also known simply as contact dermatitis, can cause an itchy red rash on the affected area.

Eczema (Atopic Dermatitis)

Atopic dermatitis, more commonly known as eczema, is a condition that causes red and itchy skin, but it is not contagious.


Psoriasis is a chronic autoimmune disorder causing itchy red patches on elbows, knees, torsos and scalps. There are seven types of psoriasis.


Rosacea is a chronic skin condition causing red patches, small red (sometimes pus-filled) bumps or tiny blood vessels visible on the face.

Seborrheic Dermatitis

Commonly known as dandruff, seborrheic dermatitis is a non-contagious skin condition primarily affecting the scalp.