Trichinosis is a parasitic infection caused by eating food contaminated with the larvae (a developing phase) of a worm called Trichinella, such as raw or undercooked pork and wild game products. Persons with trichinosis usually have nausea, diarrhea, vomiting, fever and abdominal discomfort. Headache, fever, chills, cough, eye swelling, aching joints and muscle pain, itchy skin, diarrhea, or constipation follow the first symptoms. If the infection is heavy, you may experience difficulty moving, and have heart and breathing problems. In severe cases, death can occur.