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).
1 doctor agreed: 1  A few possibilities: This could be due to allergies, dry eyes, or eye infections. 2  Sensation on scalp: The scalp on the head feels tight - the left & the right scalp feels like being pulled together. 3  Undo braids: You must undo your braids for the present time and allow the skin tissues to heal.