| % | No. of patients | Feature |
| 100% | 10 | Mild hyperkeratosis |
| 100% | 10 | Mild acanthosis |
| 30% | 3 | Perivascular inflammatory infiltrate |
| 0% | 0 | Amyloid |
| 70% | 7 | By Fontana basilar hypermelanosis |
| 3% | 3 | By Fontana dermal melanophages |