Lafora disease- MedGen UID:
- 155631
- •Concept ID:
- C0751783
- •
- Disease or Syndrome
Progressive myoclonus epilepsy, Lafora type (also known as Lafora disease [LD]) is characterized by focal occipital seizures presenting as transient blindness or visual hallucinations and fragmentary, symmetric, or generalized myoclonus beginning in previously healthy individuals at age eight to 19 years (peak 14-16 years). Generalized tonic-clonic seizures, atypical absence seizures, atonic seizures, and focal seizures with impaired awareness may occur. The course of the disease is characterized by increasing frequency and intractability of seizures. Status epilepticus with any of the seizure types is common. Cognitive decline becomes apparent at or soon after the onset of seizures. Dysarthria and ataxia appear early while spasticity appears late. Emotional disturbance and confusion are common in the early stages of the disease and are followed by dementia. Most affected individuals die within ten years of onset, usually from status epilepticus or from complications related to nervous system degeneration.
Familial temporal lobe epilepsy 4- MedGen UID:
- 368897
- •Concept ID:
- C1968847
- •
- Disease or Syndrome
A temporal lobe epilepsy characterized by autosomal dominant inheritance of occipitotemporal lobe epilepsy and migraine with visual aura and that has material basis in variation in the chromosome region 9q21-q22.
Epilepsy, familial adult myoclonic, 5- MedGen UID:
- 815704
- •Concept ID:
- C3809374
- •
- Disease or Syndrome
Early-onset epilepsy-5 with or without developmental delay (EPEO5) is an autosomal recessive neurologic disorder characterized by the onset of various types of seizures late in the first decade or during adolescence. Focal seizures are common. Most affected individuals have developmental delay, variable impaired intellectual development, and/or behavioral and neuropsychiatric abnormalities (Stogmann et al., 2013; Abdulkareem et al., 2023).
For a discussion of genetic heterogeneity of EPEO, see 617290.
Epilepsy, familial temporal lobe, 1- MedGen UID:
- 1643229
- •Concept ID:
- C4551957
- •
- Disease or Syndrome
Autosomal dominant epilepsy with auditory features (ADEAF) is a focal epilepsy syndrome with auditory symptoms and/or receptive aphasia as prominent ictal manifestations. The most common auditory symptoms are simple unformed sounds including humming, buzzing, or ringing; less common forms are distortions (e.g., volume changes) or complex sounds (e.g., specific songs or voices). Ictal receptive aphasia consists of a sudden onset of inability to understand language in the absence of general confusion. Less commonly, other ictal symptoms may occur, including sensory symptoms (visual, olfactory, vertiginous, or cephalic) or motor, psychic, and autonomic symptoms. Most affected individuals have focal to bilateral tonic-clonic seizures, usually accompanied by "focal aware" and "focal impaired-awareness" seizures, with auditory symptoms as a major focal aware seizure manifestation. Some persons have seizures precipitated by sounds such as a ringing telephone. Age at onset is usually in adolescence or early adulthood (range: age 4-50 years). The clinical course of ADEAF is benign. Seizures are usually well controlled after initiation of medical therapy.