groin rash what is this?! pics in comments!

[RebeccaRHY1]

So im talking little one to drs to get this checked out tomorrow but hes had this the last few days! Ive tried the usual sudocrem in it which hasnt done much!
He says it feels sore and wont let me touch it but its not itchy or anything. Its also at too of his bum too!
And i think its spread over the few days!
Any ideas!?
My son is 4
Thank you

Did he eat something new? Did he go to the woods? Anyone's garden?

I dont think hes ate anything new. Or been in anyones garden. He was very unwell a week or so ago. Drs believed it was a virus but gave antibiotics as his ears were bad. He recently finished antibiotics. It came out around the time he finished those. Its all dry and slightly raised and seems to spread like the veins in a leaf. Its really strange!

is there a "hereld patch" looks like a red blotch ?

It would he around 2 cm in diameter. give or take a few mm

No theres no herald patch, just checked him again and its now on his lower tummy too :-/

Some antibiotics can cause this. I had a rash after one for a chest infection and was told they would not prescribe it again. It began with A.

Rebecca has he taken those antibiotics before, it must be an allergic reaction to it!

Think he may have had them before once as a baby. It was amoxicillin. So could have developed allergy to penicillin if that could make a rash like this!? Will it just fade out on its own then?!

He did have loose stools while
On them too, but i thought that was pretty normal for any kind of antibiotic, that said he still has looser stools than normal now :-/