History:

Trigeminal Trophic syndrome is trophic ulceration seen in anaesthetic skin within the trigeminal area.This lady had previously had Herpes zoster involving the second division of the trigeminal nerve.She had a crawling sensation in the skin in this area and tended to pick at it often without realising what she was doing.A biopsy excluded basal cell skin cancer.

The following Dermatology Online Journal article discusses the condition in more detail.