Subarachnoid Hemorrhage
Hemorrhage occurring between the arachnoid mater and the pia mater.
Hemorrhage occurring between the arachnoid mater and the pia mater.
HP:0002138
http://purl.obolibrary.org/obo/HP_0002138
Sufficient
Subarachnoid Haemorrhage
Subarachnoid hemorrhage may occur spontaneously, usually from a ruptured cerebral aneurysm, or may result from head injury.