I have anxiety and have been under alot of stress. ive been experiencing cold sensations in my head that come and go? should i be worried

Anxiety...: My best recommendation is to see your doctor for evaluation. Anxiety can definitely cause physical symptoms but we cannot make a final diagnosis without a formal exam and tests as needed. If the problem is determined to be caused by anxiety only then you would be referred to a professional who can provide therapy for you.

Panic Symptoms: Coldness or numbness in extremities is one of the symptoms of Panic Attacks which can be triggered by stress.