Clinical Dermatology
Seborrheic Keratosis
Seborrheic keratoses are noncancerous (benign) skin growths that some people develop as they age. They often appear on the back or chest but are also common on the scalp, face, arms, and legs. Seborrheic keratoses grow slowly, in groups or by them.
Skin Allergies
Skin allergies are reactions caused by substances that come in contact with the skin. Contact dermatitis, eczema, and hives are types of skin allergies.