Shoulder pain from undressing may be caused by muscle strain, frozen shoulder, cervical spondylosis, shoulder dislocation and other reasons. 1. Muscle strain: If the posture is fixed for a long time or the shoulder is overused, it can lead to muscle strain, and the symptoms of shoulder pain may appear when the local soft tissue is pulled. 2. Frozen shoulder: it may be the chronic inflammation formed by long-term wear and tear of the shoulder joint. Frozen shoulder is usually accompanied by soft tissue injury, so there is a manifestation of shoulder pain when taking off clothes. 3. Cervical spondylosis: If you suffer from cervical spondylosis of the nerve root type, it may compress the nerves of the shoulder and the upper limb, resulting in shoulder pain, and the pain may be more severe when you take off your clothes. 4. Shoulder dislocation: Shoulder dislocation caused by trauma manifests itself as localized swelling of the shoulder joint and limitation of movement, so the patient will experience shoulder pain when undressing and lifting the arm. Shoulder pain when taking off clothes may also be due to other reasons. It is recommended that patients go to the hospital in time and ask the doctor to make a clear diagnosis and treatment.