Idiopathic hemiconvulsion-hemiplegia syndrome
MONDO:0019485A rare acute encephalopathy with inflammation-mediated status epilepticus characterized by infancy-onset of refractory unilateral, mainly clonic status epilepticus during or shortly after a febrile episode without evidence of central nervous system infection, followed by permanent or transient hemiplegia with a minimum duration of one week. The majority of children develop pharmaco-resistant epilepsy a few months later. Brain imaging shows edematous swelling of the affected hemisphere at the time of the initial status, followed by hemiatrophy that does not correlate with any vascular territory.
Also known as: HHE syndrome, IHHS, hemiconvulsion-hemiplegia-epilepsy syndrome
8 clinical trials for this condition and its sub-types.
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Real-World study tracks Epidyolex's Long-Term impact on seizures
Disease control OngoingThis study follows 158 people in France who are prescribed Epidyolex (a cannabidiol-based medicine) for seizures as part of their normal care. Researchers will track how long people stay on the treatment, side effects, seizure frequency, and changes in daily functioning and quali…
Sponsor: Jazz Pharmaceuticals • Aim: Disease control
Last updated Jun 27, 2026 14:00 UTC
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New inhaler aims to stop prolonged seizures fast and safely
Symptom relief ENROLLING_BY_INVITATIONThis study tests the long-term safety of an inhaled medication called Staccato alprazolam for people aged 12 and older who have prolonged seizures. About 300 participants will use the inhaler when a seizure starts to see if it stops the seizure quickly and without serious side ef…
Phase: PHASE3 • Sponsor: UCB Biopharma SRL • Aim: Symptom relief
Last updated Aug 16, 2026 00:00 UTC