Numbness in the right shoulder: 1, if the patient is sudden can be seen in cerebrovascular disease, can be seen in the left thalamus, left hemianopia and left brainstem, can lead to numbness in the right shoulder, the patient can also be accompanied by dizziness, headache and other symptoms of neurological deficits. The diagnosis can be confirmed after CT and MRI examination of the head, and treatment should be given for cerebrovascular disease.2. Numbness in the right shoulder can also be caused by localized nerve compression in the right shoulder, more commonly known as frozen shoulder.3. Numbness in the right shoulder can also be caused by cervical spondylosis, as the protruding cervical disc stimulates the nerve roots, the patient can experience numbness in the neck and shoulder. If necessary, you can check the cervical spine CT and MRI to confirm the diagnosis, treatment can be given to traction, acupuncture, massage and other symptomatic treatment. 4, right shoulder numbness can also be seen in the tumor caused by the pull caused, if necessary, to give the corresponding tumor investigation.