Onset of diarrhea following an apparent stomach virus, persisted for 5 weeks. Stool sample consistent with possible ameba infection. Flagyl administered, on the 3rd dose, appearance of numbness and tingling and Raynaud's phenomenon, sensation of impending death, no seizures. Stopped medication. SGOT and SGPT 3 to 4 times normal. CRP WNL Sed rate 20 mm first hour. ANA 1:80 homogeneous pattern, no other lab issues. Persistent incapacitationg joint and muscular pain for about 10 days since discontinuing Flagyl. Comments suggestions?