Disease or Syndrome
hair disease
fol·li·cle dis·ease [ hair dih-zeez ]
Subclass of:
Dermatologic disorders
Definitions related to hair diseases:
  • (hair disorder) A non-neoplastic or neoplastic disorder involving the hair. Representative examples include folliculitis, alopecia, tricholemmoma, and pilomatrical carcinoma.
    NCI
    U.S. National Cancer Institute, 2021
  • Diseases affecting the orderly growth and persistence of hair.
    NLM Medical Subject Headings
    U.S. National Library of Medicine, 2025
  • (hair problems) The average person has 5 million hairs. Hair grows all over your body except on your lips, palms, and the soles of your feet. It takes about a month for healthy hair to grow half an inch. Most hairs grow for up to six years and then fall out. New hairs grow in their place. Hair helps keep you warm. It also protects your eyes, ears and nose from small particles in the air. Common problem with the hair and scalp include hair loss, infections, and flaking.
    MedlinePlus
    U.S. National Library of Medicine, 2025
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