| Hair disease | |
|---|---|
 | |
| Hair follicle | |
| Specialty | Medical genetics  |
Hair diseases are disorders primarily associated with the follicles of the hair. A few examples are:
- Bubble hair deformity
- Hair casts (shedding of remnants of the inner root sheath)
- Hair loss (alopecia)
- Hirsutism (excessive hair on body parts with usually minimal hair)
- Hypertrichosis (excessive hair growth)
- Ingrown hair
- Monilethrix (beaded hair)
- Premature greying of hair
- Pattern hair loss
- Trichorrhexis invaginata (hair shaft abnormality)
- Trichotillomania (hair-pulling disorder)
Many hair diseases can be associated with distinct underlying disorders.
Piedra are fungal diseases.
Hair disease may refer to excessive shedding or baldness (or both). Balding can be localised or diffuse, scarring or non-scarring. Increased hair can be due to hormonal factors (hirsutism) or non-hormonal (hypertrichosis). Scalp disorders may or may not be associated with hair loss.
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