Concerned parent

Thank you

Thank you for this, a quick question when I try to turn off shower sooner, or say for him to stop he says he will not be able to get out as he physically will feel ill, how can I reassure him.

Hi my son is at uni, the last couple of months of term he developed o d, to the point it took him over an hour to wash hands he is concerned with what he touches , uses his jumper sleeves.and when he touches certain things he will then not use his phone etc To get him through his exams I was on phone morning and night. I thought when he got home without the stress of exams he would start getting better, but it seems worse spending over 2 hours in shower and not touching things. I feel I have contributed to this, helping him turn shower on and off, washing his clothes so he doesn't have to touch them, wiping remotes, etc. How can I help in a better way?