Table 5.
Relationship Between Trichoscopic Findings and Diagnosis.
| Total Number | AA | TC | TTM | TA | CTA | AGA | test | p-value | S | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 84 | 81 | 16 | 14 | 3 | 2 | ||||||||||
| N | % | N | % | N | % | N | % | N | % | N | % | ||||
| Tapered hair | 12 | 14.28 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 12 | 0.01 | S |
| Pigtail hair | 12 | 14.28 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 20 | 0.001 | HS |
| Regrowing hair | 21 | 25 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 22 | 0.001 | HS |
| Pohl-Pinkus constriction | 3 | 3.57 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 40 | 0.001 | HS |
| Exclamation mark | 31 | 36.90 | 0 | 0 | 3 | 18.75 | 0 | 0 | 0 | 0 | 0 | 0 | 20 | 0.001 | HS |
| Comma shaped | 0 | 0 | 38 | 46.90 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 11 | 0.001 | HS |
| Corkscrew hair | 0 | 0 | 21 | 25.90 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 33 | 0.001 | HS |
| Bent hair | 0 | 0 | 47 | 58.00 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 45 | 0.001 | HS |
| Zigzag hair | 0 | 0 | 28 | 34.50 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 35 | 0.001 | HS |
| Morse code hair | 0 | 0 | 22 | 27.10 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 63 | 0.001 | HS |
| Vellus hair | 33 | 39.28 | 0 | 0 | 0 | 0 | 14 | 100 | 3 | 100 | 2 | 100 | 8 | 0.08 | NS |
| White hair | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 33.3 | 0 | 0 | 0 | 0.01 | S | |
| Broken hair | 14 | 16.60 | 81 | 100 | 15 | 93.75 | 0 | 0 | 0 | 0 | 0 | 0 | 5 | 0.06 | NS |
| Broken hair at different | 0 | 0 | 0 | 0 | 15 | 93.75 | 0 | 0 | 0 | 0 | 0 | 0 | 15 | 0.01 | S |
| levels | |||||||||||||||
| V-shaped hair | 0 | 0 | 0 | 0 | 8 | 50 | 0 | 0 | 0 | 0 | 0 | 0 | 18 | 0.01 | S |
| Tulip hair | 0 | 0 | 0 | 0 | 4 | 25 | 0 | 0 | 0 | 0 | 0 | 0 | 24 | 0.001 | HS |
| Trichoptilosis | 0 | 0 | 0 | 0 | 7 | 43.75 | 0 | 0 | 0 | 0 | 0 | 0 | 24 | 0.001 | HS |
| Flame hair | 0 | 0 | 0 | 0 | 7 | 43.75 | 0 | 0 | 0 | 0 | 0 | 0 | 24 | 0.001 | HS |
| Hair powder | 0 | 0 | 0 | 0 | 8 | 50 | 0 | 0 | 0 | 0 | 0 | 0 | 15 | 0.01 | S |
| Mace sign | 0 | 0 | 0 | 0 | 3 | 18.75 | 0 | 0 | 0 | 0 | 0 | 0 | 20 | 0.001 | HS |
| Burnt matchstick sign | 0 | 0 | 0 | 0 | 7 | 43.75 | 0 | 0 | 0 | 0 | 0 | 0 | 7 | 0.01 | S |
| I hair | 0 | 0 | 4 | 4.90 | 5 | 31.25 | 0 | 0 | 0 | 0 | 0 | 0 | 14 | 0.01 | S |
| Coiled hair | 0 | 0 | 0 | 0 | 1 | 6.25 | 2 | 14.28 | 0 | 0 | 0 | 0 | 12 | 0.01 | S |
| Hook hair | 0 | 0 | 0 | 0 | 3 | 18.75 | 0 | 0 | 0 | 0 | 0 | 0 | 14 | 0.01 | S |
| Hair diameter diversity | 0 | 0 | 0 | 0 | 0 | 0 | 8 | 57.14 | 0 | 0 | 2 | 100 | 19 | 0.001 | HS |
| Single hair pilosebaceous | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0.00 | 0 | 0 | 2 | 100 | 19 | 0.001 | HS |
| unit | |||||||||||||||
| Black dots | 25 | 29.76 | 16 | 19.70 | 12 | 75 | 1 | 7.10 | 0 | 0 | 0 | 0 | 7 | 0.054 | NS |
| Yellow dots | 2 | 2.38 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | 0.05 | S |
| Empty hair follicle | 23 | 27.38 | 1 | 1.23 | 1 | 6.25 | 3 | 21.40 | 0 | 0 | 0 | 0 | 8 | 0.06 | NS |
| Hair cast | 0 | 0.00 | 2 | 2.47 | 0 | 0 | 4 | 28.57 | 0 | 0 | 0 | 0 | 10 | 0.01 | S |
| Perifollicular scaling | 0 | 0.00 | 59 | 72.8 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 22 | 0.001 | HS |
| Diffuse scaling | 0 | 0.00 | 61 | 75.3 | 0 | 0 | 1 | 7.10 | 0 | 0 | 0 | 0 | 17 | 0.001 | HS |
| Perifollicular erythema | 13 | 15.40 | 44 | 54.30 | 0 | 0 | 14 | 100 | 0 | 0 | 0 | 0 | 20 | 0.001 | HS |
| Perifollicular pustule | 3 | 3.57 | 28 | 34.50 | 0 | 0 | 2 | 14.20 | 0 | 0 | 0 | 0 | 22 | 0.025 | S |
p-value > 0.05: Non-significant; p-value ≤ 0.05: Significant; p-value ≤ 0.001: Highly significant.
*
Chi-square test.
Abbreviations: AA: alopecia areata; AGA: androgenetic alopecia; CTA: congenital triangular alopecia; TA: traction alopecia; TC: tinea capitis; TTM: trichotillomania.