I am 30 years old and since I was around 20 I’ve been able to grow a very thick, full beard. Within the past month or so I’ve begun to notice areas on my neck that are balding. Now more bald spots are appearing more regularly and are occurring very quickly (within 3 to 5 days). I have a clean bill of health as far as I know. Would there be any medical reason for the random hair loss? I am considering going to a dermatologist, but any other opinions would be appreciated. Thank you.
You can start with the dermatologist, as you suggested. The differential diagnosis is quite varied and it is possible that with the proper experience, a good dermatologist may make the diagnosis. Random patches of hair loss or hair loss in non-patterned areas may be a sign of other medical problems and/or conditions such as alopecia areata, ring worm, etc.
The progressive loss of neck hair may be a genetic process that starts in the middle of the neck (just below the notch at the base of the skull) and then moves outward. There will be miniaturization of the hairs in some pattern extending outward from the center. Eventually, the miniaturized hairs will fall out. This is a slower process than you are talking about, so it may not apply.