Feeling like insects are crawling on the arm—what could be causing this?

Generally, the sensation of insects crawling on the arm may be caused by psychological factors, prolonged maintenance of the same posture, peripheral neuritis, cervical spondylosis, multiple sclerosis, or other conditions. It is recommended to seek medical attention promptly, identify the underlying cause, and receive symptomatic treatment under the guidance of a qualified physician. Specific analysis is as follows:

1. Psychological factors

When feeling tense, anxious, or under high stress, individuals may experience abnormal sensations, including the feeling of insects crawling on the arm. Reducing psychological stress through relaxation techniques, deep breathing, meditation, and similar methods can help. If necessary, consultation with a psychologist or psychiatrist for professional guidance is advised.

2. Prolonged maintenance of the same posture

Maintaining the same posture for extended periods—such as during prolonged computer or smartphone use—may lead to numbness or abnormal sensations in the limbs, resulting in the feeling of insects crawling on the arm. Regularly changing posture and performing appropriate stretching exercises can promote blood circulation and alleviate symptoms.

3. Peripheral neuritis

Peripheral neuritis results from damage or dysfunction of peripheral nerve endings. When nerve fibers are impaired, transmission and processing of nerve signals may be disrupted, leading to abnormal sensations such as the feeling of insects crawling on the arm. This condition may be accompanied by pain, numbness, and weakness. Patients may take medications such as dexamethasone sodium phosphate injection, prednisone acetate tablets, and vitamin B1 tablets as directed by a physician.

4. Cervical spondylosis

Cervical spondylosis is typically caused by compression of cervical nerve roots. When these nerves are compressed, signal transmission may be obstructed or altered, causing abnormal sensations in the arm, such as the feeling of insects crawling. Symptoms may also include neck pain, stiffness, and dizziness. Under medical supervision, patients may use medications such as ibuprofen gel, Jingkang capsules, and eperisone hydrochloride tablets for treatment.

5. Multiple sclerosis

Multiple sclerosis is generally caused by an abnormal immune response in which the immune system mistakenly attacks the myelin sheath of the central nervous system, impairing nerve conduction and leading to sensory disturbances such as the sensation described. Additional symptoms may include visual impairment, muscle weakness, and coordination difficulties. Treatment should follow medical advice and may involve medications such as teriflunomide tablets, methylprednisolone sodium succinate for injection, and methotrexate tablets.

It is recommended to develop healthy lifestyle habits, maintain a proper balance between work and rest, and avoid excessive fatigue to support overall health.