| Namespace | disease_ontology | Obsolete | false |
| description | A brain disease that is characterized by low pressure inside the skull, and thus in the brain tissue and cerebrospinal fluid; may occur as a result of an occult or iatrogenically caused leak of CSF into another body cavity; may result in the downward displacement of the cerebellar tonsils through the foramen magnum or Chiari malformation; has_symptom orthostatic headache; other symptoms are related to compression of cranial nerves due to brain sagging. |
