Lathyrism is a condition caused by eating certain legumes that contains toxic chemicals affecting the nervous system. The toxic chemicals lead to a loss of function in the nerves in the lower body. Individuals with this condition may experience leg weakness, leg paralysis, rigid muscles, shaking of the muscles, and severe pain. Species of legumes that could cause this condition include Lathyrus sativa, cicera, ochrus and clymenum. Diagnosis may include a physical exam and blood tests to look for toxins. Treatment depends on the severity of the symptoms. Nerve specialists may provide patients with neurotransmissive drugs that can help bring nerve function back to normal. Physical therapists may create exercise plans for individuals to strengthen their lower body muscles.