Table 3.
Differences in tde frequency of hair disorders by continent
| Type of alopecia | Europe, n (%) | America, n (%) | Australia, n (%) | Africa, n (%) | Total, n (%) |
|---|---|---|---|---|---|
| Androgenetic alopecia | 558 (35) | 531 (41.2) | 85 (69) | 6 (4.5) | 1,180 (37.6) |
| Alopecia areata | 365 (22.9) | 172 (13.3) | 17 (14) | 14 (10.5) | 568 (18.2) |
| Telogen effluvium | 175 (11) | 175 (13.6) | 0 | 5 (3.7) | 355 (11.3) |
| Frontal fibrosing alopecia | 177 (11) | 134 (10.4) | 9 (7.3) | 17 (12.7) | 337 (10.8) |
| Lichen planopilaris | 115 (7.2) | 93 (7.2) | 3 (2.4) | 28 (21) | 239 (7.6) |
| Folliculitis decalvans | 55 (3.4) | 20 (2.5) | 3 (2.4) | 10 (7.5) | 88 (2.8) |
| Discoid lupus | 15 (1) | 41 (3.2) | 0 | 4 (3) | 60 (1.9) |
| FAPD | 11 (<1) | 45 (3.5) | 0 | 1 (1) | 57 (1.8) |
| Traction alopecia | 9 (<1) | 10 (< 1) | 1 (<1) | 24 (18) | 44 (1.4) |
| CCCA | 7 (<1) | 15 (1) | 0 | 8 (6) | 30 (1) |
| Dissecting cellulitis | 16 (1) | 13 (1) | 0 | 0 | 29 (0.9) |
| Acne keloidalis nuchae | 3 (<1) | 2 (<1) | 0 | 12 (9) | 17 (0.5) |
| Trichotillomania | 6 (<1) | 5 (<1) | 0 | 1 (1) | 12 (0.4) |
| Hair shaft disorders | 8 (<1) | 4 (<1) | 0 | 0 | 12 (0.4) |
| Otder alopecias | 65 (4.1) | 24 (1.9) | 4 (3.3) | 2 (1.5) | 95 (3.0) |
| Total | 1,592 (50.8) | 1,286 (41) | 122 (4) | 133 (4.2) | 3,133 (100) |