My 14 year old son was diagnosed with Type 1 Diabetes in September 2008 and has been on Novorapid since. He has been complaining for some time that his injections hurt, not just at the time of injection, but for a long time after. His stomach feels swollen and burns. He has now been given Humalog as we have been told it could be to do with the preservatives in Novorapid. Unfortunately he has still experienced discomfort with his injection at tea time. Can anybody help?