Intracranial Hypertension
| Definition: |
Increased pressure within the cranial vault. This may result from several conditions, including HYDROCEPHALUS; BRAIN EDEMA; intracranial masses; severe systemic HYPERTENSION; PSEUDOTUMOR CEREBRI; and other disorders. |
| Notes: |
do not confuse with INTRACRANIAL HYPOTENSION; coord IM with disease /physiopathol (IM) causing or caused by intracranial hypertension |
| Previously Indexed: |
Intracranial Pressure (1966-1997),Pseudotumor Cerebri (1966-1997) |
Intracranial Hypertension Categories.
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Hypertensive Encephalopathy - Brain dysfunction or damage resulting from MALIGNANT HYPERTENSION, usually associated with a diastolic blood pressure in excess of 125 mmHg. Clinical manifestations include headache, nausea, emesis, seizures, altered mental status (in some cases progressing to COMA); PAPILLEDEMA; and RETINAL HEMORRHAGE. Focal neurologic signs may develop. Pathologically, this condition may be associated with the formation of ischemic lesions in the brain (BRAIN ISCHEMIA). |
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Pseudotumor Cerebri - A condition marked by raised intracranial pressure and characterized clinically by HEADACHES; NAUSEA; PAPILLEDEMA, peripheral constriction of the visual fields, transient visual obscurations, and pulsatile TINNITUS. OBESITY is frequently associated with this condition, which primarily affects women between 20 and 44 years of age. Chronic PAPILLEDEMA may lead to optic nerve injury (see OPTIC NERVE DISEASES) and visual loss (see BLINDNESS). |
Intracranial Hypertension Definitions and Terms
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