How does pentamidine treat West African trypanosomiasis?

West African trypanosomiasis is an infection that spreads through your blood, eventually causing swelling in the brain. It is caused by organisms carried by the tsetse fly. West African trypanosomiasis also is known as a sleeping sickness because you suffer from drowsiness during the day and insomnia at night. As the infection spreads, sleep becomes uncontrollable and you eventually fall into a coma. Pentamidine is a medication that treats trypanosomiasis by killing the organisms responsible for the infection.