A bag on the scalp that hurts when pressed may be related to subcutaneous hematoma, sebaceous cyst with infection, boils, seborrheic dermatitis and other causes.
1. Subcutaneous hematoma: mostly due to scalp trauma, which can cause redness, swelling and subcutaneous hematoma at the site of trauma. There is obvious pain when pressing, mostly absorbed and relieved after a few days.
2. Sebaceous cysts with infection: Sebaceous cysts are localized higher than the skin. When the cysts are combined with bacterial infection, there will be redness, swelling, heat and pain, and there will be pain when pressing.
3. Boils: localized by staphylococcal infection, resulting in the appearance of red, swollen nodules the size of a pea. The center of the boil may be accompanied by yellowish-white pus oozing out. If you press the boil with your hand, you will feel pain.
4. Seborrheic dermatitis: Related to excessive production of sebaceous glands, there may be chronic inflammation of the skin. Inflammatory factors will stimulate the sebaceous glands to increase secretion, manifested as more oil on the scalp, the formation of inflammatory pimples, and will also feel pain when pressed.
Scalp grows a bag when pressed on the pain can also be seen in other causes, it is recommended to consult a doctor in a timely manner, in accordance with the doctor’s instructions for relevant examinations, in the doctor’s help to clarify the cause, and targeted treatment or treatment.