**3.4 Neurological deficit**

Neurological deficit is a relatively rare presentation of cAVMs. Patients may present with transient, progressive, permanent, or progressive focal neurological deficits not secondary to ICH or seizures. Vascular steal syndrome is assumed to be the main reason of neurologic deficit. Moreover, recurrent ICH, local mass effect, or hydrocephalus may cause neurological deficits [2, 9].
