Many people with a cerebral cavernous malformation will never experience any symptoms. In others, a cav-mal may cause:
Since these symptoms can be signs of many different conditions, a doctor will generally order an MRI scan of the brain to diagnose the problem. (See Diagnosing and Treating a Cavernous Malformation.)
In some people, symptoms seem to come and go, lessening for a while and then coming back again. This may mean that the cav-mal has caused a small hemorrhage, which worsens the symptoms; as the leaked blood is reabsorbed into the brain the patient feels better, only to experience symptoms again with the next small incident of blood leakage.
Reviewed by Philip E. Stieg, PhD, MD
Last reviewed/last updated: October 2023