Factors that may cause this or contribute to its rupture are smoking, hypertension, head injury, family history of brain aneurysms
(so sisters may have). Common symptoms could be loss of vision, headache, eye and neck pain, seizures, paralysis, gait disturbances etc. Investigations like CT angiography, MRI, CSF examination (presence of blood) are essential to reach at diagnosis here. Neurosurgery is the mainstay of treatment that may be suggested by a neurologist after examination.