Idiopathic Intracranial Hypertension (IIH) Diagnostic Criteria
Applies modified Dandy criteria for diagnosis of IIH (pseudotumour cerebri). Guides LP, acetazolamide initiation, and bariatric/surgical intervention.
Score interpretation
→ Investigate for secondary cause; rule out venous sinus thrombosis, medication (tetracyclines, isotretinoin, steroids); repeat LP if headache ongoing
→ Ophthalmology review (Humphrey visual fields, OCT); acetazolamide 250-500mg BD (contraindicated in pregnancy — topiramate alternative); weight loss (target 10% body weight); neurology outpatient follow-up
→ Urgent ophthalmology; acetazolamide (up to 4g/day); weight management programme; optic nerve sheath fenestration or LP shunt if vision deteriorating; IV methylprednisolone for fulminant IIH; bariatric surgery referral if BMI >=35
Interpretation bands for the IIH Criteria. Apply clinical judgement and local guidance.
References
Related
Curated clinical cross-links plus same-class fallbacks.
- Selexipag · Pulmonary Arterial Hypertension
- Macitentan · Pulmonary Arterial Hypertension
- Acetazolamide (Ménière's Disease) · Carbonic Anhydrase Inhibitor (Diuretic)
- Propranolol (Portal Hypertension) · Antihypertensive
- Carvedilol (Portal Hypertension) · Non-Selective Beta-Blocker with Alpha₁-Blocking Activity
- Acetazolamide · Carbonic anhydrase inhibitor
- Acute Stroke / TIA Assessment · NICE NG128; RCP Stroke Guidelines 2023
- Status Epilepticus (Adults) · NICE CG137; ESEM guidelines; RCP Neurology Guidelines
- Suspected Subarachnoid Haemorrhage · NICE NG228; RCEM 2023; AHA/ASA 2023
- Adult Head Injury · NICE NG232 (2023)
- Bell's Palsy / Facial Nerve Palsy · ENT UK 2017; AAN
- Vertigo Workup · ENT UK; NICE CKS
Decision support only — verify against a current formulary, NICE, or your local guideline before clinical use.