Conversation: The conversation between human and AI assistant.
[|Human|] The doctor injected histamine on my left arm. Pain developed on my left shoulder radiating to my neck. Then, pain radiated to my left elbow down to my hand. In addition, I felt a moderate numbness on my left arm.  Is it possible to be allergic to histamine injections, and if so, are these symptoms common?
[|AI|]  Hi... Welcome to Chat Doctor . I have gone through your query and can understand your concerns... As per your complaint it seems that there has been nerve injury caused by picking needle leading to nerve damage and causing destruction to the myelin sheath that is a protective covering over the nerve. Du to nerve injury there have been irregular firing of nerve impulses leading to pain and the pain over the shoulder and neck is radiating pain from the injection site over the course of nerve. You should consult a Neurophysician and get evaluated, and a thorough clinical evaluation can help in diagnosis. As of now you can take painkillers, vitamin B complex supplements and do warm compresses over the painful areas. Hope this information helps. Thanks and regards. Chat Doctor.