Hello Amanleo, Welcome to HCM and thanks for posting. The defining characteristic of any addiction is that it interferes with one major area in your life and that you are unable to stop despite strong efforts to do so. Some common symptoms that you may be addicted to masturbation include: - Seeking out increasingly graphic, extreme or violent pornography - Feeling ashamed of your masturbation habits - Having trouble in a relationship because of masturbation - Having trouble with sexual arousal or in-person sexual interactions because masturbation is easier or more pleasurable - Masturbating in inappropriate locations such as at work, at school, in the car or in public - Legal trouble because of masturbation or other sexual behaviors - Difficulty with time management - Feelings of frustration, anger, sadness or depression when you can’t masturbate People do not usually experience back pains and headache after masturbating, but may usually feel guilty which might lead to anxiety which in turn can micmic other problems ( like feeling ill, having a headache etc). You can see from the above described problems that masturbation addiction can cause a lot of future problems that might interfere with your social life. Careful and organized masturbation can be good, for example doing it thrice weekly and avoiding more than ones or twice a day is a good way to go about it. Some sex specialist might even advice to abort it completely. But it is a delicate situation as it is a psychosocial problem and should be handled with care. You can manage the back pain and headache with analgesia such as acetaminophens. Well wish you all the best and hope you find your way Dr Nsah