Cerebral aneurysm

Weakness, numbness, or other loss of nerve function may indicate that an aneurysm may be causing pressure on adjacent brain tissue. Symptoms such as a severe headache, nausea, vomiting, vision changes, or other neurological changes may mean the aneurysm has ruptured and is bleeding into the brain. A ruptured brain aneurysm is considered very dangerous and requires immediate medical attention.