Symptoms of vampirism are symptoms of hematoporphyrinopathy, manifested by skin photosensitivity, sensory and motor neuropathy, acute abdominal pain, autonomic nervous system involvement, neuropsychiatric system involvement, hemolysis, etc., as follows: a. Skin photosensitivity: Skin photosensitivity is mainly manifested in the epidermis of the sun-exposed area, which is characterized by a pinched sensation, a burning sensation, a significant pain or the formation of a blister, which can be scarred and malformed after breakage, and in severe cases In severe cases, there can be loss of fingers, eyelids, nose or ears. Sensory and motor neuropathy: patients with sensory and motor neuropathy may have pain, numbness, motor weakness of the limbs, and in severe cases, quadriplegia and respiratory muscle weakness may occur. Third, acute abdominal pain: acute abdominal pain is the most common, mostly persistent attacks, which can be accompanied by cramps, abdominal distension, nausea, vomiting, constipation, and even intestinal obstruction. Involvement of the autonomic nervous system: Tachycardia, restlessness and elevated blood pressure can be seen in the manifestation of autonomic nervous system involvement. E. Neuropsychiatric system involvement: patients with neuropsychiatric system involvement can have agitation, hallucinations, emotional apathy, depression, and when the hypothalamus is involved, it can cause epileptic seizures. Sixth, hemolysis: severe patients can appear obvious hemolysis, increased transaminases, acute seizures can present brown-red urine.