Many different factors and conditions can lead to an itchy rash, including eczema, skin allergies, and psoriasis. Read about some of them here. ... knees, and near the hairline.

Dermatitis herpetiformis is an autoimmune disorder that causes a chronic and very itchy rash, usually on the elbows, knees, and buttocks, although it can affect any area of the skin.

The National Eczema Association defines eczema as a common skin condition characterised by red, itchy rashes. It often appears in patches on the face, hands, feet, or behind the knees. Eczema can ...

A common sign of celiac disease is an itchy rash on the elbow, knees, lower back, and buttocks. Cavan Images/Getty Images 2021-10-15T15:05:49Z Share. Facebook Email X LinkedIn Copy link. An ...

The itchy rash on the woman's knee had a raised, snake-like appearance. (Image credit: Courtesy of Elsevier Inc. 2017) ...