Paraquat poisoning.
D005158:Facial Paralysis / Q000209:etiology*; D006540:Herbicides / Q000506:poisoning*; D006801:Humans; D008297:Male; D008875:Middle Aged; D011725:Pyridines / Q000506:poisoning*; D000644:Quaternary Ammonium Compounds / Q000506:poisoning*
D006540:Herbicides; D011725:Pyridines; D000644:Quaternary Ammonium Compounds