Why is your skull have lumps all over?

Lumps on the skull can be caused by various factors, including bone growths like benign tumors or exostoses, trauma resulting in bumps or swelling, or conditions such as paget's disease. In some cases, they may also be due to cysts or infections. If the lumps are new, painful, or changing, it's advisable to consult a healthcare professional for proper evaluation and diagnosis.