<s>[INST] About four months back I hit my head and got a slight concussion. About two months ago I started noticing a small lump where I hit my head. The lump grew a bit bigger and a few more appeared as well. I ve been getting migraines a lot and I never got them much before. The lumps don t cause pain but when I touch them I can definitly feel a lot of pressure and they are pretty hard. Any suggestions? [/INST] Hi,Welcome to HCM.Based on the facts you seem to suffer from Inclusion dermoid with fibrosed Hematoma at the hit site in the head.Or could be sebaceous cysts with acne,or could be dercums lipomatosis.These need to be ruled out.Remedy-USG and CT study of the skull would resolve the ambiguity in diagnosis.Consult Physician to investigate cause of Migrain.Avoid spicy/non-veg food / avoid alcohol,smoking,tobacco,if any.Hope this would resolve your anxiety and would help you to plan further treatment with your doctors.Will appreciate your Hitting  thanks and writing  excellent review comments to help needy patients like you. Good Day!!Dr.Savaskar,Senior Surgical SpecialistM.S.Genl-CVTS </s>