10 of the most common skin conditions photos and treatments 1 acne acne vulgaris acne the most common skin disorder in the us can be a source of anxiety for every teen 2 atopic dermatitis eczema atopic dermatitis is one of the most common forms of eczema seen in children the exact . The common raised bumps on the skin known as warts are actually caused by the human papillomavirus hpv warts are contagious and can appear on any part of the body common warts typically grow. Saneeya bureekhan eyeem getty images acne is the most common skin condition in the united states affecting up to 80 percent of people in their teens and 20s 3 contrary to popular belief acne doesnt necessarily go away once puberty is over. The two main types of human skin are glabrous skin the hairless skin on the palms and soles also referred to as the palmoplantar surfaces and hair bearing skin within the latter type the hairs occur in structures called pilosebaceous units each with hair follicle sebaceous gland and associated arrector pili muscle