Why do I get a headache when I tie my hair? This symptom needs to be considered in the following two aspects: firstly, once the hair is tied especially when the hair is tied tightly, or caused by excessive force, which pulls the scalp causing irritation to the hair follicles, resulting in pain to the nerve endings, or possibly stimulating the trigeminal nerve branches leading to headache, in this case it is recommended not to tie the hair too tightly, so as not to pull the nerve causing headache. The second, there may be skin diseases, such as folliculitis, hair tying will stimulate the hair follicles cause headache, this time you need to go to the regular hospital dermatology examination, to see if there are skin diseases or folliculitis, for the treatment of the situation. No matter which condition causes the headache when tying the hair, first of all, it is recommended to keep the hair hygiene, wash the hair regularly, and then don’t tie it too tightly, you can avoid this situation.