Feeling that there are bugs crawling on the body, also known as anthropomorphic sensation, the causes of this situation may be related to allergic dermatitis, sensory nerve disorder and mental abnormalities and other diseases. 1. Allergic dermatitis is a kind of allergic reaction that occurs when the skin is stimulated by certain factors, which is mainly manifested as itching of the skin in the clinic, and some patients can also manifest ankylosing sensation. After removing the allergic factors, the ankylosis symptoms can disappear. 2. Sensory nerve disorder belongs to some early manifestations of neurological diseases, such as diabetic peripheral neuritis, radiculitis, chronic spinal myelitis, multiple sclerosis and so on, and it may be related to intracranial tumors, spinal cord tumors and other factors. 3. Mental abnormality mainly refers to the people with psychological lesions, such as depression, anxiety, etc. Such people may have abnormal sensations, such as the feeling of insects crawling on the body. When there are other reasons for the recurring ants crawling sensation on the body, it is necessary to go to the regular hospital in time for consultation and symptomatic treatment.