Idiopathic intracranial hypertension | |
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Other names | Benign intracranial hypertension (BIH),[1] pseudotumor cerebri (PTC)[2] |
For the diagnosis, brain scans (such as MRI) should be done to rule out other potential causes | |
Specialty | Neurology |
Symptoms | Headache, vision problems, ringing in the ears with the heartbeat[1][2] |
Complications | Vision loss[2] |
Usual onset | 20–50 years old[2] |
Risk factors | Overweight, tetracycline[1][2] |
Diagnostic method | Based on symptoms, lumbar puncture, brain imaging[1][2] |
Differential diagnosis | Brain tumor, arachnoiditis, meningitis[3] |
Treatment | Healthy diet, salt restriction, exercise, surgery[2] |
Medication | Acetazolamide[2] |
Prognosis | Variable[2] |
Frequency | 2 per 100,000 per year[4] |
1 Signs & symptoms of increased ICP – CSF pressure >25 cmH2O |
2 No localizing signs with the exception of abducens nerve palsy |
3 Normal CSF composition |
4 Normal to small (slit) ventricles on imaging with no intracranial mass |
1 Symptoms of raised intracranial pressure (headache, nausea, vomiting, transient visual obscurations, or papilledema) |
2 No localizing signs with the exception of abducens (sixth) nerve palsy |
3 The patient is awake and alert |
4 Normal CT/MRI findings without evidence of thrombosis |
5 LP opening pressure of >25 cmH2O and normal biochemical and cytological composition of CSF |
6 No other explanation for the raised intracranial pressure |
Classification |
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External resources |
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