Hi..
Welcome to HEALTHCARE MAGIC..
I have gone through your query and can understand your concerns..
As per your complain a purple patch over the roof of mouth can be due to arterio-venous malformation leading to formation of a
Hemangioma, it can also be a tortuous and dilated vein also known as
Varicose vein, it can also be a
mucous cyst or
mucocele due to ruptured duct of minor
salivary gland..
Nothing to worry as all these conditions are non cancerous as well as treatable..
You can consult an Oral Physician and get evaluated and a clinical evaluation and laboratory investigations like Biopsy if needed can be done according to the cause..
In case of hemangima either use of sclerosing agents or surgcal removal can help..
Varicose vein is harmless and does not require any treatment if not causing any discomfort..
Mucocele can shring with concentrated salt water rinses and t it does not resolve surgical removal has to be done..
Hope this information helps..
Thanks and regards.
Dr. Honey Nandwani Arora.