I will try my best to answer your query.
Alone, venous angiomas tend not to cause any symptoms. That is, the majority of venous angiomas are thought to remain dormant or silent throughout life. However, some do cause problems such as seizures or brain hemorrhage
. Hemorrhage from these vessels, although very rare, can cause sudden onset of headache. But they are typically not associated with chronic headaches
or migraines. So i think your headache is not due to angioma.
Consult the treating physician and try to find out the cause of headache.
Hope my answer will be helpful for you.