After eating lobster poisoning, the first manifestation is gastrointestinal symptoms, which can include nausea, vomiting, abdominal pain, and diarrhea. If the abdominal pain and diarrhea are severe, dehydration will occur, resulting in drier skin and even sunken eyes. In addition, there will be electrolyte loss, and low sodium and potassium will result in poor mental health, weakness of limbs or inability to move around. If the poisoning is more severe and the toxin invades the central nervous system, dizziness, headache, nausea and vomiting will occur, and more serious development will lead to coma, convulsions, and even central respiratory depression, resulting in life-threatening conditions. In case of allergic symptoms, it may lead to a generalized rash of pemphigus-like rash, maculopapular red rash, predominantly itchy. If allergic symptoms cause laryngeal edema or even pulmonary edema, they can lead to symptoms such as respiratory distress.