Hello, Phelbitis is swelling, inflammation of the veins. Othe oral conditions associated with this include a tooth abscess, sinusitis, siaiolithasis, neuropathy, viral, shingles, bacterial, and fungal. Your initial dental visits should have evaluated your mother for these conditions. When the sitution doe not resolve, second opinions and your referral to specialists is the best way to proceed. Were you told there are vascular malformations often called VM or AVM? Hemangiomas may have been a prior condition. There are various treatments directed at the location of these malformations to stop the flow of blood. This treatment is called embolization. Any deficiencies or organ malfunctions? Blood tests and other diagnostic information are important to your mother s correct diagnosis. I encourage having additional tests that will provide or confirm a diagnosis. I believe you are proceeding in the right direction and your surgeon should be able to answer your questions or will consult appropriate medical specialists. Your mother s overall health and dental history needs to be considered. I would be glad to answer additional questions with more details concerning your mother. Thank you for your inquiry.