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).
Below, you will find the most common symptoms of sores on scalp: Skin tender or even painful to touch. Swelling around the affected area. Itchiness. Changes in skin color. Pus collection under the skin. Crusting of the skin. Skin lesions â from small areas to large plaques.