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823 Possible Causes for Decreased Jaw Reflex, EMG Shows Evidence of Reinnervation, Muscle Biopsy Abnormal

  • Motor Neuron Disease

    For patients with MND affecting the LMNs, the EMG will show evidence of: (1) acute denervation, which is ongoing as motor neurons degenerate, and (2) chronic denervation and[en.wikipedia.org] The results of electromyography and muscle biopsy were compatible with ALS. However, supranuclear vertical gaze palsy and slow saccades are seen.[ncbi.nlm.nih.gov] reinnervation of the muscle, as the remaining motor neurons attempt to fill in for lost motor neurons.[en.wikipedia.org]

  • Amyotrophic Lateral Sclerosis

    Only about 10% of ALS patients have abnormal nerve conduction study results, but the test can also suggest other diagnoses. A muscle biopsy.[webmd.com]

    Missing: EMG Shows Evidence of Reinnervation
  • Myopathy

    Clinical presentation, abnormal secretion of the collagen demonstrated in muscle biopsy and the COL6A1 c.1056 3A C mutation justify classification of the presented case as[ncbi.nlm.nih.gov] […] or absent reflexes in affected muscles; long, narrow face; high-arched palate; jaw projects beyond upper part of the face.[healthofchildren.com] Laing early onset distal myopathy: slow myosin defect with variable abnormalities on muscle biopsy. J Neurol Neurosurg Psychiatry. 2006;77:208-15.[rarediseases.org]

    Missing: EMG Shows Evidence of Reinnervation
  • Myasthenia Gravis

    Muscle biopsies in these patients show myopathic signs with prominent mitochondrial abnormalities, as opposed to the neurogenic features and atrophy frequently found in MG[web.archive.org] Muscle biopsies of these patients show myopathic features with prominent mitochondrial abnormalities, as opposed to the neurogenic features and atrophy frequently found in[emedicine.com]

    Missing: EMG Shows Evidence of Reinnervation
  • Muscular Dystrophy

    This condition is typically characterized by large and abnormally distributed mitochondria on muscle biopsy, which can distinguish this condition from the other muscle conditions[ncbi.nlm.nih.gov] Under the microscope, the muscle of a positive biopsy generally shows dead tissue and abnormally large muscle fibers.[cedars-sinai.edu] Muscle biopsies from subjects 1 and 3 were severely dystrophic with abnormal immunofluorescence and western blotting indicative of α-dystroglycan hypoglycosylation.[ncbi.nlm.nih.gov]

    Missing: Decreased Jaw Reflex EMG Shows Evidence of Reinnervation
  • Duchenne Muscular Dystrophy

    Diagnosis of Duchenne Muscular Dystrophy A muscle biopsy (taking a sample of muscle) for dystrophin studies can be done to look for abnormal levels of dystrophin in the muscle[disabled-world.com] […] fibers) For Duchenne and Becker muscular dystrophies, muscle biopsy may show whether dystrophin, a muscle protein, is missing or abnormal, and DNA testing is used to analyze[webmd.com] A muscle biopsy (taking a sample of muscle) for dystrophin studies can be done to look for abnormal levels of dystrophin in the muscle.[genome.gov]

    Missing: Decreased Jaw Reflex EMG Shows Evidence of Reinnervation
  • Rhabdomyosarcoma

    Related Ped-onc page: Warning Signs of Childhood Cancer: Rhabdomyosarcoma Highly recommended: Rhabdomyosarcoma on the cancer.gov site R habdomyosarcoma is a fast-growing, highly malignant tumor which accounts for over half of the soft tissue sarcomas in children. Less frequently, other soft tissue sarcomas are[…][web.archive.org]

    Missing: Decreased Jaw Reflex EMG Shows Evidence of Reinnervation
  • Primary Lateral Sclerosis

    Muscle histology Deltoid muscle biopsies showed no mitochondrial abnormalities or dysfunction (Table 4 ). Muscle biopsies were normal in seven patients.[academic.oup.com] Normal Normal Abnormal 18 Abnormal Normal Normal Abnormal 19 Abnormal Normal/increased Normal Normal 20 Abnormal Increased/normal Normal Normal Table 4 Electrophysiological[academic.oup.com] […] and histological motor results Patient Electrophysiology Muscle biopsy MEPs Denervation No.* Reinnervation Denervation Reinnervation Upper limb Lower limb *Number of electrophysiological[academic.oup.com]

    Missing: Decreased Jaw Reflex EMG Shows Evidence of Reinnervation
  • Stiff-Person Syndrome

    Previous diagnostic testing, including magnetic resonance imaging, muscle biopsy, and electromyography, showed no specific abnormalities and blood was negative for anti-GAD[redorbit.com] Trials of several muscle relaxant medications and intravenous immunoglobulin did not provide any significant relief.[redorbit.com]

    Missing: Decreased Jaw Reflex EMG Shows Evidence of Reinnervation
  • Becker Muscular Dystrophy

    Electromyography was abnormal in all patients. Muscle biopsy in 1 patient demonstrated normal immunostaining for dystrophin.[ncbi.nlm.nih.gov] Elevated serum CK Skeletal muscle biopsy showing decreased dystrophin quantity Panel overlap The gene on this panel is also included on our Autism Intellectual Disability[unmc.edu] Dystrophin immunohistochemical analysis showed a discontinuous patchy staining pattern in cardiac and skeletal muscles biopsied from the proband.[ncbi.nlm.nih.gov]

    Missing: Decreased Jaw Reflex EMG Shows Evidence of Reinnervation