Crawfish poisoning will have a rash, itching and other allergic reactions, abdominal pain, diarrhea, nausea, vomiting and other digestive symptoms, accompanied by fatigue, muscle aches and other symptoms. Symptoms of crayfish poisoning include an allergic reaction, mainly skin-based, will be covered with a rash, red rash, itching, severe will cause skin lesions. There are also digestive symptoms, mainly nausea, vomiting, abdominal pain, diarrhea. There will also be systemic symptoms, such as weakness, fever, muscle pain and other symptoms. When eating crayfish, you need to pay attention to the cooking method and make sure to cook it well. After eating if the above symptoms must cause enough attention, stop eating crayfish, go to the hospital in time for medical treatment.