First welcome!!!! This is an awesome group! I hate leaving a new person hanging! The only thing I can say is that if he is super sensitive to tactile that probably the cold would cause him pain. You will see setbacks, sometimes it can come with growth spurts, changes in something with OT, or you might not figure it out. We had a horrible first three months of third grade. My son had a HORRIBLE time transitioning into third grade. He would do something in OT and sometimes he would get worse before getting better. I was told growth spurts can cause setback and mood changes. Regarding the cold, think about how some people say when they get so cold it feels like pins and needles, maybe since he is extra sensitive that could be that way for him. Just as my son cannot wear denim at all, he cannot stand it, it hurts his skin. Especially getting out of the pool into the cold air. His skin was probably so sensitive he had to wait to be touched until it was ok for him, when he felt better. I am sure you will but I would tell the OT and see what she says. I would say it would be his sensitivity, remind him next time when you go swimming that to grab his towel right away when he gets out so he stays warm. Or maybe get the towel with the hood or robe/towel thingy. Go on the other forums on here where the adults talk about how things make them feel and you can get a wealth of knowledge as to how your child is feeling. At this age they have such a hard time expressing how they feel. Have a great day today and glad you are here!