Symptoms of AVM vary according to the location of the malformation. Roughly 88% of people with an AVM are asymptomatic; often the malformation is discovered as part of an autopsy or during treatment of an unrelated disorder (called in medicine an "incidental finding"); in rare cases, its expansion or a micro-bleed from an AVM in the brain can cause epilepsy, neurological deficit, or pain. The most general symptoms of a cerebral AVM include headaches and epileptic seizures, with more specific symptoms occurring that normally depend on the location of the malformation and the individual. Such possible symptoms include: * Difficulties with movement coordination, including muscle weakness and even paralysis; * Vertigo (dizziness); * Difficulties of speech (dysarthria) and communication, such as aphasia; * Difficulties with everyday activities, such as apraxia; * Abnormal sensations (numbness, tingling, or spontaneous pain); * Memory and thought-related problems, such as confusion, dementia or hallucinations. Cerebral AVMs may present themselves in a number of different ways: * Bleeding (45% of cases) * Acute onset of severe headache. May be described as the worst headache of the patient's life. Depending on the location of bleeding, may be associated with new fixed neurologic deficit. In unruptured brain AVMs, the risk of spontaneous bleeding may be as low as 1% per year. After a first rupture, the annual bleeding risk may increase to more than 5%. * Seizure or brain seizure (46%) Depending on the place of the AVM, it can cause loss of vision in one place. * Headache (34%) * Progressive neurologic deficit (21%) * May be caused by mass effect or venous dilatations. Presence and nature of the deficit depend on location of lesion and the draining veins. * Pediatric patients * Heart failure * Macrocephaly * Prominent scalp veins Pulmonary arteriovenous malformations Pulmonary arteriovenous malformations are abnormal communications between the veins and arteries of the pulmonary circulation, leading to a right-to-left blood shunt. They have no symptoms in up to 29% of all cases, however they can give rise to serious complications including<unk> , and infection. They are most commonly associated with hereditary<unk> c telangiectasia.
medical cause of Intracerebral hemorrhage
symptom of Intracerebral hemorrhage
medical cause of Epidural hematoma
medical cause of Subarachnoid hemorrhage
medical cause of Stroke
symptom of Meningioma
medical cause of Vertebral artery dissection
symptom of Idiopathic intracranial hypertension