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Results 1 - 1 of 1 for Exaggerated startle response
  1. Hereditary hyperekplexia 
    ... infants have increased muscle tone (hypertonia) and an exaggerated startle reaction to unexpected stimuli, especially loud noises. Following ... throughout the body result in abnormal muscle movements, exaggerated startle reaction, and other symptoms characteristic of this disorder. ...
    https://medlineplus.gov/genetics/condition/hereditary-hyperekplexia - Genetics