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10 Possible Causes for 3-4 Hz Spikes, Lower and Upper Limbs Affected, Myoclonic Jerking

  • Benign Adult Familial Myoclonic Epilepsy

    By the jerk-locked averaging method, a positive spike time-locked to the myoclonic jerk was demonstrated in four patients before 15-20 msec of myoclonic jerk.[ci.nii.ac.jp] Childhood absence epilepsy with tonic-clonic seizures and electroencephalogram 3-4-Hz spike and multispike-slow wave complexes: linkage to chromosome 8q24.[reference.medscape.com] Attacks may last several minutes to half an hour and more frequently affect the lower than upper limbs.[epilepsydiagnosis.org]

  • Familial Infantile Myoclonic Epilepsy

    One fifth of patients have photosensitivity, with myoclonic jerks precipitated by photic stimulation.[medlink.com] Childhood absence epilepsy with tonicclonic seizures and electroencephalogram 3-4-Hz spike and multispikeslow wave complexes: linkage to chromosome 8q24.[books.google.es] […] during course of epilepsy.  Ictal EEG: generalized, high-amplitude 3 Hz spike and slow-wave complexes, lasting 4–20 s.  Generally responsive to antiepileptic drug (AED)[slideshare.net]

  • Paroxysmal Exertion-Induced Dyskinesia

    It is characterized by brief and abrupt myoclonic jerks (common occurrence in 90% of patients) and seizures.[encyclopedia.com] […] sharps, irregular, asym theta/delta slowing in tonic sz, 3 hz spike-wave, gen paroxysmal fast activity, Hypsarthymia) 3hz spike and wave (interictal) features Maximal frontally[quizlet.com] Attacks may last several minutes to half an hour and more frequently affect the lower than upper limbs.[epilepsydiagnosis.org]

  • Adult-Onset Autosomal Recessive Cerebellar Ataxia

    […] to manage her frequent myoclonic jerking.[jnnp.bmj.com] There is a burst of generalized discharges of spikes, multiple spikes and slow waves at 4 to 5 Hz, with greater voltage on the left.[academic.oup.com] Clinical features Late-onset ataxia Slowly progressive Lower limb more affected than upper limb Dysarthria, ocular dysmetria Spasmodic torticollis in some Brain MRI shows[emedicine.medscape.com]

  • Myoclonic Epilepsy of Infancy

    We report a group of five children with excessive myoclonic jerks, only during sleep, and abnormal EEG during the events.[ncbi.nlm.nih.gov] […] during course of epilepsy.  Ictal EEG: generalized, high-amplitude 3 Hz spike and slow-wave complexes, lasting 4–20 s.  Generally responsive to antiepileptic drug (AED)[slideshare.net] Rarely, the lower limbs are affected, causing falls. Jerks can be singular or can occur in a series and may vary in severity.[medlink.com]

  • Autosomal Recessive Spinocerebellar Ataxia 8

    Myoclonic jerks appear during the second year of life and there is progressive microcephaly.[academic.oup.com] Clinical features Late-onset ataxia Slowly progressive Lower limb more affected than upper limb Dysarthria, ocular dysmetria Spasmodic torticollis in some Brain MRI shows[emedicine.medscape.com] There is a burst of generalized discharges of spikes, multiple spikes and slow waves at 4 to 5 Hz, with greater voltage on the left.[academic.oup.com]

  • Non-epileptic Convulsion

    Similar to the typical myoclonic jerks experienced by these patients, myoclonic status epilepticus often presents in the morning.[emedicine.medscape.com] Juvenile absence epilepsy An epilepsy syndrome with an age of onset of 9–13 years characterised by absence seizures, associated with 34 Hz spike wave on EEG.[nice.org.uk] Attacks may last several minutes to half an hour and more frequently affect the lower than upper limbs.[epilepsydiagnosis.org]

  • Generalized Epilepsy - Paroxysmal Dyskinesia Syndrome

    It is characterized by brief and abrupt myoclonic jerks (common occurrence in 90% of patients) and seizures.[encyclopedia.com] From age 3 years 6 months, multiple absence seizures per day appeared, with rhythmic blinking, accompanied by generalized 3-Hz spike-and-wave discharges on the EEG.[onlinelibrary.wiley.com] Attacks may last several minutes to half an hour and more frequently affect the lower than upper limbs.[epilepsydiagnosis.org]

  • Absence or Deformity of Leg- Cataract Syndrome

    Subacute necrotizing encephalopathy, also called Leigh disease, is a lethal disorder of infancy marked by psychomotor delay, myoclonic jerks, paralyses of eye movements, and[britannica.com] Interictal EEG showed an intensification of the frontal-central-parietal focus of 3-4 Hz high amplitude activity, at times intermingled with synchronous or asynchronous spike-waves[omicsonline.org] Hypoplastic femur with variable lower limb shortening; hypoplastic fibulae frequent. Preaxial polydactyly of toes described (Baraitser).[mediscansystems.org]

  • Autosomal Recessive Spinocerebellar Ataxia 3

    Myoclonic jerks appear during the second year of life and there is progressive microcephaly.[academic.oup.com] Clinical features Late-onset ataxia Slowly progressive Lower limb more affected than upper limb Dysarthria, ocular dysmetria Spasmodic torticollis in some Brain MRI shows[emedicine.medscape.com] There is a burst of generalized discharges of spikes, multiple spikes and slow waves at 4 to 5 Hz, with greater voltage on the left.[academic.oup.com]

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