The symptoms of a cavernoma can be controlled using anti-convulsants and pain killers but these have no impact on the blood vessel malformation.

If a cavernoma is causing symptoms that cannot be controlled, or it is in danger of causing serious brain damage because it is enlarging over time, surgery should be considered.

Brain surgery involves a craniotomy, an operation in which the skull is opened to be able to operate directly on the cavernoma. An experienced neurosurgeon uses microsurgery techniques and computer assisted imaging to locate the cavernoma and to remove it without damaging the brain tissue around it.

Some cavernomas arise in the brain stem or the top of the spinal cord; removing these carries quite a high risk but is sometimes necessary as cavernomas at these sites can cause the most problems.