What are some symptoms of a torn hamstring?

Symptoms of a torn hamstring or hamstring injury include severe and sudden pain during activity or exercise that is accompanied by a popping or snapping feeling, according to WebMD. Patients may also experience tenderness or bruising on the back of the thighs.

Additional symptoms of a torn hamstring include pain in the lower buttocks or back of the thigh when bending over, stretching, walking or straightening the leg, explains WebMD. People who have mild hamstring strains may only experience mild pain in the affected area.

People who do not warm up or stretch prior to exercise and those with weak glutes are at risk for a torn or injured hamstring, according to WebMD. Tight muscles in the front of the thighs can also put more strain on the hamstrings.