<s>[INST] Hello, my glabella keeps swelling periodically, for 4 years now, since I had a concussion, and 20 stiches in the center of my forehead up into my hairline. It make s me feel a little light headed...woud you happen to have any ideas as to why this is happening? [/INST] Hello!Welcome on Healthcaremagic!Your symptoms are not typical of any serious medical disorder. Anyway, the swelling could be related to any particular vein passing in this region. A brain CT scan would help exclude possible scull fracture, related to the head trauma. If the CT scan results normal, there is nothing to worry about. Hope you will find this answer helpful!Kind regards, Dr. Aida </s>