I am frequently disturbed by itchiness that occurs all over my body randomly. It's like mosquito bites/pricking sensation etc and it happens frequently. Can anybody tell me what could be the reason for this. Approached a doctor, who said it could be due to deficiency of Vitamin B12. She has asked me to take Vitamin tablets. Is it a viable remedy to this? If anybody has any idea/view inline to this please do let me know about the same.