Alrite so... I'm just really glad that I am not the only person that has this! I am 17 years old and a senior in high school. I started noticing this problem toward the middle of 10th grade. It started off little by little. At first it was only triggered when i would eat spicy foods and it would only make my head itchy. What really made me trip out was when it was caused by my emotions
Whenever i would get nervous or mad I would start itching like crazy!
It started on my scalp but slowly progressed down to my face, neck, back, lower back, and sometimes even my butt cheeks
! The only way i would be able to relieve it would be to get out of the sun and try to calm down. Cold temperatures really helped me a lot (applying ice to itchy areas).
What i have found out is that if i started excercising, i would get itchy. But if i kept on going while fighting the itchyness it would go away. I am also a VERY stressful person and I know that it attributes to my itchyness.
My best advice is to just maintain a healthy life style and do changes in your life that will reduce stress.