I had posted a pic of the strange red "bruising" under the skin on my left leg. I had several of these and even the doctor didn't know what they were. Someone mentioned platelets but I couldn't get any more information. Thanks to Martyn Hoopers book I came across this condition and it all makes sense now. Before getting my b12 injections I used to get nosebleeds at least once a week,sometimes more often,always my left nostril. I also had bleeding gums. All these symptoms have disappeared since getting b12 injections.how could my doctor not put two and two together ???