Alopecia (also known as Baldness, Hair Loss): Absence of hair from areas where it is normally present.

NIH MeSH · D000505Diseases

Alopecia

Also known asBaldness · Hair Loss · Hair Losses · Losses, Hair · Loss, Hair · Pseudopelade · Alopecia Cicatrisata · Alopecia Cicatrisatas · Androgenetic Alopecia · Alopecia, Androgenetic · Pattern Baldness · Baldness, Pattern

Definition

Absence of hair from areas where it is normally present.

MeSH classification

  • C17.800.329.937.122
  • C23.300.035

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Common questions about Alopecia

What does Alopecia mean in medicine?
Absence of hair from areas where it is normally present. This definition is taken from the National Library of Medicine's MeSH (Medical Subject Headings) 2026 release, which is the standard vocabulary used to index PubMed and most medical literature.
Is Alopecia known by any other names?
Yes. Alopecia is also referred to as Baldness, Hair Loss, Hair Losses, Losses, Hair in different clinical, research and patient-facing contexts. The MeSH descriptor groups all of these synonyms under a single canonical concept so research and records stay consistent.
Where does Alopecia sit in the medical classification?
Alopecia falls under the broader medical category "Diseases" in the MeSH hierarchy (tree numbers: C17.800.329.937.122, C23.300.035). Browsing the related concepts on this page takes you to neighbouring topics in the same branch of medicine.
Where can I get a plain-language explanation of Alopecia?
For a plain-language explanation of Alopecia - including symptoms, treatments and what it means for an Indian patient - ask GoDavaii's Health AI. It works in 22+ Indian languages, is free and needs no signup. Tap "Ask GoDavaii AI about Alopecia" above.

Source: NIH MeSH 2026 (D000505) — National Library of Medicine, public domain. View official MeSH record ↗