I found this website through a google for "sand on scalp", and I found a journal entry from someone here at http://www.medhelp.org/user_journals/show/12858/scalp-condition
that I wanted to draw attention to on this forum. Everyone on that journal suffers form the same issue I do.
For the past two years, I have what feel and appear to be like grains of sand on my scalp. They seem to be "attached" to the base of the hair shafts, but when I massage my scalp gently with my fingertips, they come off. My scalp has 100s of them. If I scratch my head, the itching sensation is INTENSE, and I try never to scratch my scalp. If I do give in, and scrape a few dozen of them off, I can get them out form under my fingernails (gross, I know), and they look like grains of sugar or sand. They are hard like grains of sand. You can not "squish" them.
They are not lice...my husband is an RN, and he has looked at my scalp many times, and we are certain of this. The dermatologists I have seen also tell me they are not lice, but seem to be unconcerned, and give me no suggestions of how to stop them or the itching, except to use dandruff shampoo - which does absolutely nothing.
You can see more details of exactly what all of us (over 70 posts at that link) are going through - very similar to exact same stories. They are not flake-like at all. Any suggestions would be appreciated, thanks in advance. We are all looking for answers to this mystery, and would love to hear some new ideas. So far, suggestions have been Morgellons disease, White piedra, Demodex folliculorum, and the one I lean towards: seborrheic dermatitis. However, not being FLAKES seems to rule the last one out!? Help?
(sorry, for the repost, I posted this in dermatology, and then figured undiagnosed symptoms was a better fit)