A raised meatball on the head is usually associated with boils, common warts, hair root sheath cysts and other causes, which can usually be treated medically, physically or even surgically. Common causes and treatments: 1. Boils: Inflammatory nodules or abscesses caused by pathogenic bacteria infecting hair follicles and their surrounding tissues, accompanied by local redness, swelling, heat, pain, and increased pain when pressed, are acute infectious skin diseases. The actual fact is that you can use imiquimod cream topical, if necessary, freezing and electrocautery treatment; 3, hair root sheath cysts: hair root sheath cysts are formed outside the hair follicle sheaths, a rare disease, often yellow, smooth, hemispherical elevated swelling, can have beanbag-like discharge. It is usually treated with the help of carbon dioxide laser and surgical excision. 4. Sweat adenocarcinoma: This disease is a malignant tumor of the skin appendages. Sweat adenocarcinoma occurring in the scalp is light red or dark red, varying in size, solid mass, not clearly bounded by the surrounding tissues, and can take the form of a single or multiple masses. It is usually treated by radiation or surgical excision. Note: Patients who have a raised meatball on their head should try not to pick it with their hands to avoid picking out the wound secondary to infection. Do not scrub or squeeze your hair vigorously to avoid breakage.