Alopecia is an umbrella term representing a number of different hair loss conditions, which range from patchy thinning to complete baldness and (in extreme cases) hair loss across the face and body.
The term “alopecia” is often used as a shorthand for alopecia areata, an autoimmune disease where the body’s immune system attacks hair follicles. It is one of the most common forms of alopecia—though there are various types, each with a range of different characteristics and effects.
Changes to the hair, including thinning or hair falling out, may also signify an underlying medical condition that requires attention. It’s important to talk to a doctor or a trichologist if you notice changes to your hair’s density or condition.
What Advanced Alopecia Might Look Like