Sore shoulders that make you unable to sleep may be caused by cervical spondylosis, frozen shoulder, muscle strain and other reasons. 1. Cervical spondylosis: If you suffer from cervical disc herniation, it may compress the nerve root, leading to symptoms of soreness in its innervated area. 2. Frozen shoulder: With the prolongation of the disease, the patient’s pain worsens, sometimes involving the middle part of the upper arm, which may cause shoulder pain and sleeplessness. 3. Muscle strain: when engaged in physical labor for a long period of time, it may lead to muscle strain, which may be manifested as localized swelling, pain, soreness and other symptoms. It is recommended that people who can’t sleep due to shoulder pain go to a regular hospital in time to clarify the cause of the disease and standardize the treatment under the guidance of the doctor, so as not to delay the condition.