4 days ago my 8 year old son developed some spots behind ear and down his neck, it then spread over his back and torso. The doctor is saying chicken pox but it has cleared up behind his ears and neck without blistering and scabbing over and has now moved onto his private area and down his legs but again not a blister in sight. He has no temp and generally feels well and has no itching. Has anyone seen chicken pox like this with no symptoms ? I have added pictures thanks