A cavernoma often does not cause symptoms, but when symptoms do occur they can include: bleeding (haemorrhage) fits (seizures) headaches.

Why do cavernomas cause headaches?

Unlike arteriovenous malformations, there is little blood flow in cavernomas. Since the walls of cavernomas are weak, blood can leak out. Cavernomas can occur in the brain and on the spinal cord. While a cavernous angioma may not affect function, it can cause seizures, stroke symptoms, hemorrhages, and headaches.

How concerned should you be about cavernomas?

Most cavernomas do not cause any symptoms, and may go unnoticed for most of (or even all of) the patient's life. Most are found during scans carried out for other reasons. However, in some cases they can cause symptoms, which can be very serious in nature and may post a serious risk to the patient's health.