My 7 yr old son constantly licks his fingers and hands and wipes saliva all over them. Its very upsetting and I do not know what to do about it. Its gotten so bad that I have noticed his hands now smell and things like his DS smell. He started doing it last spring, I think when he had a wobbley tooth and he got used to putting his fingers in his mouth. Within a couple of weeks this progressed to him licking his fingers, hands and he had started to lick his forearms. We have discussed it with him, he doesn't know why he does it, we tried to look at the hygeine aspect, handwashing and spreading germs etc but it carried on. Then it just stopped when he went into school after the holidays and I thought it may have been an anxiety thing. But it has started again over the last few weeks. Has anyone else experienced this ? I'm worried that it might be the start of OCD or something similar ?