For awhile now I have had a sore spot in the top of my head. I don't wear pony tails or braids because anything that pulls on my scalp gives me a headache. My scalp doesn't have sores and the area doesn't appear to be red, but my hair has thinned in the sore area. It isn't sore to touch it just constantly feels tender. I do suffer from allergies to dust, pollen, and cat dandruff. I often have sinus pressure around my temples and forehead. Could my sinus problems be causing my sore scalp?