I had lipoma removal surgery from my forehead and scalp. The pain after surgery was almost unbearable. Is this common?

No, this is not normal. I would follow up with your surgeon for an in-person examination. Best wishes.

Thank you for sharing your question and I am sorry to hear of your discomfort.  Overall the severity of your pain seems excessive for a lipoma removal.  I would check with your surgeon to ensure no other issues are taking place. 

This is not a normal response to lipoma excision anywhere on the body. Some pain from the incision is possible, but not sever headaches with nausea and vomiting. Please follow up with your surgeon or go to an ER or Urgent Care if this has continued.