Invasion literature was a niche genre with very little sociopolitical impact.
Monomelic amyotrophy -LRB- MMA -RRB- , also known as Hirayama disease and Spinal muscular atrophy juvenile nonprogressive -- is an untreatable , focal motor neuron disease that primarily affects young -LRB- 15 - to 25-year-old -RRB- males in India and Japan .. motor neuron disease. motor neuron disease. India. India. Japan. Japan. atrophy. atrophy. MMA is marked by insidious onset of muscular atrophy , which stabilizes at a plateau after two to five years from which it neither improves nor worsens .. atrophy. atrophy. There is no pain or sensory loss associated with MMA .. Unlike other lower motor neuron diseases , MMA is not believed to be hereditary and fasciculations -LRB- involuntary muscle twitches -RRB- are rare.EMG tests reveal loss of the nerve supply , or denervation , in the affected limb without conduction block -LRB- nerve blockage restricted to a small segment of the nerve -RRB- .. hereditary. hereditary. EMG. Electromyography. Increased sweating , coldness and cyanosis have been reported for a few patients , indicating involvement of the sympathetic nervous system.While MMA will cause weakness and / or wasting in only one limb , EMG and NCV tests often show signs of reinnervation in the unaffected limbs .. EMG. Electromyography. sweating. sweating. cyanosis. cyanosis. sympathetic nervous system. sympathetic nervous system. NCV. Nerve conduction velocity. reinnervation. reinnervation