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).
Headaches, sore scalp, tight neck, head tension: Your scalp feels sore, has shooting pains, or that the back of your neck and head are very tense. You might also experience burning scalp or skin on your head, neck or any other place on your body. It might also feel like there is a pressure in your head, or like there is a tight band around your head. It might also feel like your scalp is sore or burning, yet there is no physical or medical reason for it.