Bed wetting. Basis of this information.

My son 2.5 years old .his weight is 12 kg which is from last 1.5 years (11-12). In one years his weight was 10.5 kg. He has habit of bed wetting day and evening.. He doesn't tell that he want to pass urine instead he pass in clothes bed floor. And this happens in night too. Also he has speech delay and not clear voice .he has white spots on face don't know why. He understand alphabets and fruits and animals name and learn them. But he use 90% babbling and 10% understandable words in a sentences . Mostly he demanding by pointing out things in one words . And his behaviour is very obstinate. He is hyper active. He never want to sleep. We need to do very hard to go him for sleep. He sleeps very late in night arround 12-1 am with lot of efforts and wake up at 8-9 am. He is picky eater. And don't eat healthy food. If forced he bangs his head and banging head is common for him. For any his desire ignored he hit on floor wall. And cry. What can you evaluate on basis of this information.