We now have the runs (as int he foal does, not me)

which is all down his bum, tail and legs - I understand this is the norm after about a week - 10 days of birth due to the mare coming back into heat.
He could really do with a wash (vets advice to stop him being sore) but he's suddenly decided he's coming nowhere near me or anyone else! He could do with a jacket on too as the weathers turned bad - blizzards etc - so any tips on how to sort this without stressing him or mum out would be good

Fox is great now but i'm just worried in case we stress him out. We sat in the stable for ages today but he was running around, then hiding behind mum and looking at us from under her belly - i'm sure he was laughing at us...........