Could There Be a Multi-Decade Delay in Feeling Head Trauma?

I have a problem with my left side that the hair want grow. There is a very bad stinging, burning spot that turns into a very deep, deep itch that is horrible. the hair in this spot is shot and straggly. I have been to 3 dermatologist, scalp swap for fungus and bacteria and blood work drawn. all negative for any systemic problems. Please help to solve this.

At age 17 i was in a car accident with this side of my head hitting the window. Could this be causing a delayed affect after 36 years. It’s only on that side of the scalp.

I doubt that I can contribute information to solve a problem that 3 physicians who’ve actually examined you have not solved. Maybe it is a psychological or a neurological issue or an atypical migraine issue? Just a shot in the dark though, as I highly doubt I can help with your specific issue without a physical examination.

There’s nothing that really stands out to help diagnose this based on your few sentence email. Sorry.