Diarrhea after eating loosestrife may be caused by allergy to loosestrife, food poisoning, ginger bug disease and other factors. Different causes and treatments are different, which can be treated by oral medication (such as cetirizine hydrochloride, praziquantel, etc.), emetic and other ways. 1. Rhododendron allergy: people who are allergic to rhododendron, if they eat rhododendron for the first time, it can trigger nausea, vomiting, diarrhea and other gastrointestinal allergy symptoms, and can be accompanied by sneezing, dyspnea and other phenomena. Should avoid eating again, and follow the doctor’s instructions oral anti-allergy drugs, such as cetirizine hydrochloride, loratadine, etc., diarrhea is serious, but also oral montelukast to reduce the symptoms. 2. Food poisoning: If the rhododendron is contaminated by bacteria or fungi, after eating, can cause food poisoning, leading to nausea, vomiting, abdominal pain, diarrhea and other symptoms. Should promptly go to the hospital, follow the doctor’s instructions for vomiting, gastric lavage and diarrhea, in order to reduce the absorption of toxins, vomiting, diarrhea, severe, but also follow the doctor’s instructions for rehydration (such as dextrose injection, potassium chloride injection, vitamin C injection, etc.), in order to maintain the body’s water-electrolyte balance. 3. Ginger worm: there may be cystic larvae on the rhombus, eating rhombus or gnawing the rhombus skin with teeth, may be the cystic larvae into the abdomen, thus triggering the ginger worm, resulting in lack of appetite, abdominal pain, diarrhea, or constipation alternately and other phenomena, and the amount of stools, peculiar odor, containing undigested food. Deworming can be done by oral administration of praziquantel, etc. as prescribed by the doctor. In addition, there are other causes can be caused by eating rhododendron after diarrhea, it is recommended to go to the hospital in a timely manner, after the cause of the disease is clear, receive treatment as soon as possible.