Generalized morphea: This type of scleroderma causes widespread patches of hard, thickened skin. What is scleroderma? When a person has scleroderma (sclare-oh-dur-muh), the body makes too much collagen. This excess collagen, the substance that holds our body together, causes hardening and tightening. Most

What is psoriatic arthritis? Do you have psoriasis? If so, it's important to pay attention to your joints. Some people who have psoriasis get a type of arthritis called psoriatic (sore-ee-at-ic) arthritis. This arthritis often begins with a few swollen joints. A single finger or toe may be noticeably

  Hidradenitis suppurativa: This skin disease often forms on the underarm. Hidradenitis suppurativa: Overview Also called acne inversa What is hidradenitis suppurativa? Hidradenitis suppurativa (HS) is a disease that usually begins as pimple-like bumps on the skin. The pimple-like bumps tend to develop