Onychomycosis (also called Tinea unguium) is a fungal infection of the nail. Nails that are affected may become thickened, may split, and may develop yellowing.
Alopecia areata, also known as spot baldness, is an autoimmune disease. Heredity may be a factor in this condition, which is characterized by round patches of hair loss and the underlying skin appears scarred.
Lupus is a chronic, autoimmune disorder. It can cause damage to any part of the body, including skin, joints, and organs. Lupus often manifests as a characteristic "butterfly rash" on the nose and cheeks, though other symptoms like fatigue and joint pain also accompany it.