Alopecia areata is an autoimmune disease that causes hair loss, mostly in small, round patches. Learn more about the causes & risk factors.

¿Qué es la alopecia areata? Es una enfermedad que ataca los folículos pilosos (las estructuras de la piel que producen el pelo). En la mayoría de los casos, el pelo se cae en mechones pequeños y …

What is alopecia areata? It is a condition that attacks your hair follicles (they make hair). In most cases, hair falls out in small, round patches.

Alopecia areata is an autoimmune disease that causes hair loss, mostly in small, round patches. Learn more about the causes & risk factors.

Jun 5, 2025 · Find information on diagnosis, treatment, and prevention for skin conditions caused by allergies, irritants, genetic makeup, certain diseases, immune system problems and more.

What is alopecia areata? It is a condition that attacks your hair follicles (they make hair). In most cases, hair falls out in small, round patches.

Jun 5, 2025 · Alopecia Areata What is alopecia areata? It is a condition that attacks your hair follicles (they make hair). In most cases, hair falls out in small, round patches.

Mar 22, 2023 · Types of Autoimmune Diseases There are several types of autoimmune diseases. These include the following. Alopecia areata happens when the immune system attacks hair follicles and …

Psoriasis is a skin disease that causes red, scaly skin that may feel painful, swollen, or hot. Learn more about the types and what causes psoriasis.

What is acne? It is caused when blocked skin follicles from a plug caused by oil from glands, bacteria, and dead cells clump together and swell.