Alopecia: Types

1. Alopecia areata: Loss of hair in sharply defined patches usually involving the scalp or beard.

2. Alopecia capitis totalis/ Alopecia totalis: Complete or near complete loss of hair on the scalp.

3. Cicatricial alopecia: Loss of hair due to formation of scar tissue.

4. Alopecia congenitalis: Baldness due to absence of hair bulbs at birth.

5. Alopecia follicularis: Baldness due to inflammation of the hair follicles of the scalp.

6. Alopecia liminaris: Loss of hair along the hairline, both front and back, of the scalp.

7. Male pattern alopecia: Typical hair loss pattern of males in which the alopecia begins in the frontal area and proceeds until only a horseshoe area of hair remains in the back and temples. This loss is dependent on the presence of the androgenic hormone testosterone.

8. Alopecia medicamentosa: Loss of hair due to administration of certain medicines, esp. those containing cytotoxic agents.

9. Alopecia pityroides: Loss of both scalp and body hair accompanied by desquamation of branlike scales.

10. Alopecia prematura: Premature baldness.

11. Alopecia symptomatica: Loss of hair after prolonged fevers or during the course of a disease; may result from systemic or psychogenic factors.

12. Alopecia toxica: Loss of hair thought to be due to toxins of infectious disease.

13. Alopecia Universalis: Loss of hair from the entire body.

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