Hello, Welcome to HCM, I understand your concern. Bed wetting at the age to 13 years is not normal and we have to do something for that. You should start with home measures initially. Ask your son not to drink fluid, water, caffeine containing drinks like cocacola, thumpsup, pepsi, tea, coffee two hours before going to sleep. Ask your son to empty bladder before going to bed. Some children exhibit some sign just before wetting the bed like restlessness. If you pick up this sign during night, wake up him and take him for bathroom. Never scold your son for wetting the bed. Bed wetting may be a sign if the child feels emotion or social insecure. Take your child in your confidence. Tell him that bed wetting is not good and you are going to help him get rid of this. During day time, ask your son to hold urine as long as he can and than go and empty bladder. This kind of bladder exercise will enable him to control bladder. Try these measures for 2-3 months. If they are working, go ahead with them. If they don t work, You should consult psychiatrist or pediatrician. Medicines are available for bed wetting like Imipramine & desmopressine and they are highly effective but they can only be prescribed by a doctor. I hope this will helpful. All the best.