Excess of physical exertion may precipitate facial and eye muscle spasm. It can be due to muscle fatigue. Side effects of certain medicines can produce facial twitching. Drinking excess of coffee, or any other caffeinated drinks can cause involuntary twitching of muscles, facial muscles are one of them.
Blood and organ donors are screened in many endemic areas and, since 2006, in the US to prevent transfusion- and organ transplantârelated Chagas disease. Key Points Chagas disease is caused by Trypanosoma cruzi, which is transmitted by Triatominae (reduviid, kissing, or assassin) bugs. Infection is endemic in South and Central America and Mexico; an estimated 8 million people worldwide, including an estimated 300,000 people in the US (primarily immigrants), are infected.
Save to mypetMD. Chagas disease is an illness caused by the protozoan parasite Trypanosoma cruzi, which may infect dogs in several ways, including through blood exposure to the feces of âkissing bugs,â the ingestion of infected kissing-bugs, kissing-bug feces or prey (e.g., rodents), or congenitally from a mother to her offspring.