Located of the brainstem; controls breathing and heartbeat; connects the medulla to the two sides of the cerebellum to help coordinate and integrate movement on each side of side of the body; involved in sleep and dreaming.
Serious symptoms related to the bite of a brown recluse spider include low platelet count, destruction of the red blood cells, blot clots in capillaries, inability to form clots, acute renal failure or kidney damage, coma, and death.
Four to eight hours afterward, the bite may become more painful and look like a bruise or blister with a blue-purple area around it. Later, the bite becomes crusty and turns dark. Symptoms of a brown recluse spider bite occur within a few hours and include fever, chills, itching, nausea, and sweating.