Intercostal pain may be caused by overwork, trauma, cervical spondylosis, peripheral neuropathy of the intercostal nerve, and so on. 1. Overwork: If you do heavy physical work, your wrist often exerts itself, which may lead to excessive fatigue of the hand, causing the accumulation of local lactic acid that cannot be metabolized in time, resulting in piriformis pain. 2. Trauma: If the palm of the hand is hit or knocked, it will easily lead to skin and soft tissue damage, resulting in localized redness, swelling, heat and pain, resulting in the phenomenon of inter-fisheye pain. 3. Cervical spondylosis: when the patient suffers from cervical spondylosis, it will easily lead to peripheral nerve compression, causing pain in the innervated area, resulting in the phenomenon of piriformis pain, accompanied by numbness, weakness of the fingers to grasp the symptoms. 4. Peripheral neuropathy of the piriformis: if the patient’s elbow joint, the ulnar side of the palm of the hand and other parts of the stimulation, it will easily lead to ulnar neuropathy, and the occurrence of piriformis pain. Patients with piriformis pain should go to the hospital in time, complete the relevant examinations, and follow the doctor’s instructions after a clear diagnosis, so as not to delay the condition.