causes of rashes on elbows and feet
Quick Answer. A blotchy rash on the elbows and knees is a common symptom of plaque psoriasis, a skin condition that causes skin cells to multiply up to 10 times faster than normal, according to WebMD. WebMD explains that plaque psoriasis causes red plaques on the skin that are often covered with loose scales.
The causes of an itchy rash on the hands and the feet include skin conditions such as dry skin, psoriasis and eczema, according to WebMD. Additional causes of a rash on the hands and the feet include diabetes, allergic reactions and scabies. Continue Reading.