Clinically, the sensation of bugs crawling on the body is called ankylosis, which may be caused by lack of trace elements, contact dermatitis, mental stress, diabetes and other reasons. 1. Lack of trace elements: If you lack vitamin B and folic acid and other nerve synthesizing substances, the lack of neurotrophic substances may cause peripheral nerve disorders, which will lead to ankylosis, that is, the sensation of bugs crawling on the body. 2. Contact dermatitis: If people with allergies come into contact with allergens or irritants, resulting in an allergic skin reaction, the feeling of bugs crawling on the body may also occur. 3. Mental stress: If the long-term stress is too high, the patient will experience neurological dysfunction, which may lead to the appearance of the feeling of bugs crawling on the body. 4. Diabetes: If the patient suffers from diabetes, the involvement of peripheral neuropathy, resulting in peripheral sensory dysfunction of the limbs, there will be a feeling of insects crawling on the body. It is recommended that patients should go to the regular hospital in time to find out the cause and take targeted treatment under the guidance of professional doctors.