The common causes of pain in the little finger attached to the shoulder include exertion, cervical spine disease, and cervical fasciitis. 1. Exertion: Excessive exercise or incorrect exercise posture may cause pain in the bunion with shoulder. Usually it can be relieved after rest. 2. Cervical spine diseases: cervical disc herniation, cervical spinal cord tumor, cervical subluxation and other cervical spine diseases will be manifested as neck pain, dizziness, limited movement, etc., which may radiate to the upper limb pain, causing pain in the little finger and shoulder. 3. Cervical fasciitis: Cervical fasciitis mainly manifests as neck and upper limb pain, muscle tension, numbness and so on. If the pain is severe or cannot be relieved, you should go to the hospital in time to improve the examination to clarify the cause of the disease, and then give targeted treatment or treatment.