Symptoms of an AVM vary based on where it's found. Often the first symptoms appear after bleeding occurs. Besides bleeding, symptoms can include: AVM  Progressive loss of neurological function Headaches Nausea and vomiting Seizures Loss of consciousness  Other possible symptoms include:  Weak muscles Paralysis in one part of the body Loss of coordination that can cause problems with gait Problems performing tasks that require planning Weakness in the lower extremities Back pain Dizziness Vision problems, including losing part of the field of vision, loss of control of eye movements or swelling of part of the optic nerve Problems with speech or understanding language Unusual sensations including numbness, tingling or sudden pain Memory loss or dementia Hallucinations Confusion  Children and teens might have trouble with learning or behavior. One type of AVM called a vein of Galen defect causes symptoms that appear at or shortly after birth. A vein of Galen defect is situated deep inside the brain. Signs can include: AVM  A buildup of fluid in the brain that causes enlargement of the head Swollen veins on the scalp Seizures Failure to thrive Congestive heart failure 
symptoms avm vary based it's found  first symptoms bleeding occurs  bleeding  symptoms can include: avm  progressive loss neurological function headaches nausea vomiting seizures loss consciousness  possible symptoms include:  weak muscles paralysis part body loss coordination can cause problems gait problems performing tasks require planning weakness lower extremities back pain dizziness vision problems  including losing part field vision  loss control eye movements swelling part optic nerve problems speech understanding language unusual sensations including numbness  tingling sudden pain memory loss dementia hallucinations confusion  children teens trouble learning behavior  type avm called vein galen defect causes symptoms shortly birth  vein galen defect situated deep inside brain  signs can include: avm  buildup fluid brain causes enlargement head swollen veins scalp seizures failure thrive congestive heart failure 
arteriovenous malformation