Pili gemini

What it is

A rare isolated hair shaft abnormality characterized by multiple hair shafts arise from a single pilosebaceous canal and emerge from a single follicular ostium. It can occur in each type of hair; mostly in bread of men or in the other uncommon locations of the body (such as the back or abdomen). Folliculitis may also be present. Most of the patients are asymptomatic, however, some may present with recurrent inflammatory lesions which can have residual atrophic or hypertrophic scars. Persisting itching is also reported in some patients.

Key facts

Age of onset

Adolescent, Adult, Childhood, Elderly

Classified as

Disease

Signs and symptoms

These ranges are how often a sign appears across everyone diagnosed, not a prediction for one person — most people have some of these and not others. Orphanet also records findings that are specifically absent in this disease; those are in the data but not listed here.

ICD-10 codes

ICD-10 has no distinct code for most rare diseases, so many are filed under the nearest available one. A shared code identifies the group, not this disease — the ORPHAcode above is what identifies it.

Related health topics

Reached through the ICD-10 categories this disease is filed under, so these describe the broader group rather than this disease specifically.

Cross-references