Skin Diseases, Conditions & Disorders| NIAMS
2023年4月3日 · It is a long-term disease that causes reddened skin and pimples, usually on the face. It can also make the skin thicker and cause eye problems. Scleroderma. Scleroderma causes areas of tight, hard skin, but can also harm your blood vessels and organs. Learn the causes and treatments of this skin disease. Vitiligo.
Psoriasis Types, Symptoms & Causes | NIAMS
2024年8月5日 · Symptoms of psoriasis vary from person to person, but some common ones are: Patches of thick, red skin with silvery-white scales that itch or burn, typically on the elbows, knees, scalp, trunk, palms, and soles of the feet. Dry, cracked skin that itches or bleeds. Thick, ridged, pitted nails. Poor sleep quality.
Vitiligo Symptoms, Treatment & Causes | NIAMS
2021年3月2日 · Vitiligo is a chronic (long-lasting) autoimmune disorder that causes patches of skin to lose pigment or color. This happens when melanocytes – skin cells that make pigment – are attacked and destroyed, causing the skin to turn a milky-white color. In vitiligo, the white patches usually appear symmetrically on both sides of your body, such ...
What is Ichthyosis? Definition & Causes | NIAMS
Ichthyosis refers to a group of skin disorders that lead to dry, itchy skin that appears scaly, rough, and red. The symptoms can range from mild to severe. Ichthyosis can affect only the skin, but some forms of the disease can affect internal organs as well. Most people have a genetic form of ichthyosis that results from a changed gene, often ...
National Institute of Arthritis and Musculoskeletal and Skin …
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What is Epidermolysis Bullosa (EB)? | NIAMS
Epidermolysis bullosa is a group of rare diseases that cause the skin to be fragile and to blister easily. Tears, sores, and blisters in the skin happen when something rubs or bumps the skin. They can appear anywhere on the body. In severe cases, blisters and sores may also develop inside the body, such as in the mouth, esophagus, stomach ...
Alopecia Areata - Hair loss Causes & Living With It | NIAMS
Alopecia areata is a disease that happens when the immune system attacks hair follicles and causes hair loss. Hair follicles are the structures in skin that form hair. While hair can be lost from any part of the body, alopecia areata usually affects the head and face. Hair typically falls out in small, round patches about the size of a quarter ...
Health Lesson: Learning About Skin | NIAMS - National Institute of ...
5 天之前 · The hypodermis (hai-pow-DUR-muhs) is the deepest layer of skin. It helps you store energy and connects your skin to your muscles and bones. The skin contains many different types of cells that work together. For example, there are: Immune (uh-MYOON) cells that fight germs.
Hidradenitis Suppurativa (HS) Acne Inversa | NIAMS
2023年6月22日 · Hidradenitis suppurativa, also known as HS and less commonly as acne inversa, is a chronic, noncontagious, inflammatory condition characterized by painful bumps or boils and tunnels in and under the skin. Pus-filled bumps on the skin or hard bumps beneath the skin can progress to painful, inflamed areas (also called “lesions”) with chronic ...
Arthritis and Rheumatic Diseases & Conditions | NIAMS
2023年9月6日 · Arthritis is often used to refer to any disorder that affects the joints. Rheumatic diseases usually affect joints, tendons, ligaments, bones, and muscles. What is ankylosing spondylitis? It is arthritis that affects the spine, usually producing redness, heat, swelling, and pain in the spine where it joins the pelvis.