### instruction:
If you are a doctor, please answer the medical questions based on the patient's description.

### input:
I have a lump that appears above my right eyebrow. It comes and goes. It is only there for a couple of hours. It may be gone for months and then reappears, always in the same place. It is hard and painless even when pressed, it is about the size of an acorn, maybe a little smaller.

### output:

Hi, Dear thanks for the query to Chat Doctor virtual clinic. I studied your query in full details updated from you. I understood your health concerns. Based on your query data, In my opinion, Dear You seem to suffer from periorbital Desmond with link to intraorbital fossa or intracranial fossa or could be frontal sinus muscle and needs to be ruled out by CT study of the skull and sinuses and periorbital areas. Treatment-Would by Surgeon in association with ENT / ophthalmic/ or neurosurgeon depending on the nature of the tumour-with sinus muscle / or intracranial extension / or intraorbital extension with defects in the bony rim of the orbital cavity. Moslty a Desmond Cyst is the cause of Such a tumor. In any case -excision with Biopsy for homeopath study would be needed in your case. Hope this reply would help you to evaluate your case and treat it with your doctors in time to come. Hope this would resolve your query and worry and Anxiety accompanied by it. Welcome for any further query in this regard to ME. I would love to help you out.Awaiting any further query. Wish you fast recovery from this intriguing health problem. Have a Good Day. Chat Doctor. N.M.S. Genl-CVTS -Senior Surgical Consultant