What is the bump on my head?

A bump on the head can have many causes. Here are some possibilities:

1. Scalp Laceration: This occurs when the scalp is cut and a flap of skin is raised, causing a noticeable bump.

2. Hematoma: A hematoma is a collection of blood outside of a blood vessel. It can form under the scalp after an injury and create a bump.

3. Concussion: A concussion can cause a small, hard lump on the head. This is usually accompanied by other symptoms such as dizziness, nausea, and sensitivity to light.

4. Skull Fracture: A skull fracture can also cause a bump or swelling on the head. This is a serious injury and requires immediate medical attention.

5. Sebaceous Cyst: A sebaceous cyst is a common, non-cancerous bump that can form on the scalp due to a blocked sebaceous gland.

6. Dermoid Cyst: A dermoid cyst is a congenital malformation that contains skin and other tissue. It can present as a bump on the head.

7. Infected Hair Follicle: When a hair follicle gets infected, it can cause a small, pus-filled bump on the scalp.

8. Skin Cancer: Certain types of skin cancer, such as basal cell carcinoma, can appear as a bump on the head.

9. Lipomas: Lipomas are benign, fatty tumors that can develop anywhere on the body, including the scalp.

10. Osteomas: Osteomas are bony growths that can occur on the skull and cause a visible bump.

11. Soft Tissue Mass: In rare cases, a bump on the head can be caused by a soft tissue mass, such as a lipoma or a neuroma.

If you have a bump on your head, it's important to see a doctor for accurate diagnosis and treatment. The doctor can determine the cause of the bump and recommend the best course of action based on your individual situation.