what causes white dry spots on skin
by Lee Kaplan, MD. White spots on skin can be caused by a variety of conditions, including allergies, infections and autoimmune disorders. Some of the most common forms are eczema, seborrheic dermatitis and psoriasis. Eczema is a chronic, probably genetic, inflammatory condition that causes dry, itchy, cracked skin on feet, arms, ankles, face and chest. Scratching can make it worse, actually thickening the skin. Sometimes the skin can blister.