About The Medical Condition Type IV, HSAN
Find the definition of the medical term Type IV, HSAN. Type IV, HSAN defined and explained for easy understanding at the Medical Conditions from ClusterMed.info.
Type IV, HSAN
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What's The Definition Of The Medical Condition Type IV, HSAN?
A group of inherited disorders characterized by degeneration of dorsal root and autonomic ganglion cells, and clinically by loss of sensation and autonomic dysfunction. There are five subtypes. Type I features autosomal dominant inheritance and distal sensory involvement. Type II is characterized by autosomal inheritance and distal and proximal sensory loss. Type III is DYSAUTONOMIA, FAMILIAL. Type IV features insensitivity to pain, heat intolerance, and mental deficiency. Type V is characterized by a selective loss of pain with intact light touch and vibratory sensation. (From Joynt, Clinical Neurology, 1995, Ch51, pp142-4)
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