I am going crazy with itchiness!
It's the worst on the back of my head, beginning where the hair is growing from my neck, and continuing up my scalp for about 10cm. It looks to be in roughly the same place that sufferers of head lice experience the worst itching, but I'm sure it isn't lice. There aren't any nits or anything even similar to them.
If I scratch this itchiest area, I get tiny dry white flakes no bigger than a millimeter wide at the very most. Usually it's more like coarse white powder. They aren't at all oily like dandruff. The top and sides of my head may itch every once in a while, but they don't have the powder. Very rarely, I get a small pimple or something like that in this area, but only ever one or two at a time, and they clear up quickly. I have long hair which I only wash every once in 5 days or so, always at night before going to bed. This condition seems to be the absolute itchiest on the second and third day after I wash my hair, then it calms down a little. Sometimes I don't want to wash it because I know how bad the itching will be... but I don't want to risk an infection, either.
I've had this for probably four years now, but we recently moved to another climate (hotter, drier) and I think it's getting worse. I have hypothyroidism, so I always thought it was the dry skin symptom... could it be something else? Are there any OTC products I could try? I'm about thiiiiis close to putting calamine lotion on my head!