intracranial hypertension true Raised intracranial pressure Raised intracranial pressure may cause decerebrate or decorticate posturing, which can be paroxysmal and mistaken for tonic-clonic or tonic seizures. Affected individuals with raised intracranial pressure are expected to show signs of encephalopathy including alteration in conscious level (not improving in the minutes after the event, as one would expect in a post-ictal state), abnormalities of tone and reflexes and pupillary abnormality. NCI:C84791 UMLS_CUI:C0151740 MESH:D019586 disease_ontology A brain disease that is characterized by high pressure inside the skull, the brain tissue and cerebrospinal fluid, has_symptom headache, has_symptom vomiting, has_symptom altered mental status, has_symptom papilledema. SNOMEDCT_US_2018_03_01:28073009 DOID:9428 Miscellaneous