One of the main causes of sinus drainage is simply being alive. Every day the human body produces several liters of sinus fluid and mucus, and all of that natural liquid must go somewhere.
It is a area of tenderness of the scalp in which people also sometimes feel stabbing headaches. Others just feel very sore and tender to the touch. It is felt to be caused by irritation of the connective tissue which attaches the muscles of the scalp to the skull (cranium).
People also viewed. 1  What causes painful bumps on the scalp. 2  What causes pain in hair roots on the scalp. 3  What causes right sided scalp pain.  What causes onesided pain on 1  scalp. Causes of itchy scalp hair.