Infectious disease with epilepsy

Infectious disease with epilepsy (Orphanet code 166490) is a broad clinical category encompassing conditions in which epileptic seizures arise as a consequence of central nervous system (CNS) infections. Various infectious agents—including viruses (such as herpes simplex virus, cytomegalovirus, and human herpesvirus 6), bacteria (such as those causing meningitis or brain abscess), parasites (such as Taenia solium causing neurocysticercosis), and fungi—can invade or affect the brain, leading to acute symptomatic seizures during the active infection or chronic epilepsy that persists after the infection has resolved. The condition primarily affects the central nervous system, with inflammation, direct neuronal injury, gliosis, and structural brain damage serving as key mechanisms underlying seizure generation. Key clinical features include recurrent seizures (which may be focal or generalized), fever, altered consciousness, headache, focal neurological deficits, and cognitive impairment depending on the causative organism and the extent of brain involvement. In many low- and middle-income countries, infectious etiologies represent one of the most common preventable causes of epilepsy, with neurocysticercosis being a leading contributor worldwide. The age of onset is highly variable, ranging from neonatal infections (such as congenital cytomegalovirus or neonatal herpes) to adult-onset cases. Treatment depends on the underlying infectious agent and includes targeted antimicrobial therapy (antibiotics, antivirals, antiparasitics, or antifungals), anti-seizure medications to control epileptic activity, and supportive care. In some cases, surgical intervention may be required to remove focal lesions such as brain abscesses or calcified granulomas. Early identification and treatment of the underlying infection can reduce the risk of developing chronic epilepsy, though some patients may require long-term antiepileptic drug therapy.

Age of Onset

Variable

Can begin at different ages, from infancy through adulthood

Source: openFDA + DailyMed · NDA / BLA labels with structured indications · refreshed weekly

Source: ClinicalTrials.gov · synced daily · phases, status, and PI names normalized at ingest

Source: NPI Registry + PubMed · trial PI roles cross-referenced with ClinicalTrials.gov · ranked by match score (publications + PI activity + community signal)

Source: NORD Rare Disease Centers + NIH Undiagnosed Diseases Network (UDN) · centers verified active within last 12 months

Source: PubMed + NIH RePORTER + openFDA + clinical-journal RSS · last 30 days · disease-tagged at ingest by AI extraction with human QC

Common questions about Infectious disease with epilepsy