Hand Foot and Mouth... And Groin and Thrush??

[UPALLNIGHTMNETTING]

Wondering if anyone has any clues about this...

18 month old has patchy white tongue, with one large, red circle on, and odd (slightly septic smelling) breath. Hungry but cries and points to his tongue whenever he tries to eat. No blisters or bumps on tongue. No fever. But blisters round his groin. GP yesterday diagnosed oral thrush, and said blisters round groin could just be to do with the thrush / nappy rash, which made sense. He has an antifungal syrup.

But today he has blisters coming up on his hands / wrists / feet... but not the inside or outside of his mouth. Still no fever, but has been having Calpol so maybe that has just masked it.

Goes from being relatively content, to suddenly screaming, hitting himself in face with distress.

Does he have thrush, HFM or both?? Any tips to relieve his discomfort? Thanks for reading.

https://www.cdc.gov/hand-foot-mouth/about/signs-symptoms.html#:~:text=Symptoms%20of%20hand%2C%20foot%2C%20and%20mouth%20disease%20(HFMD),for%207%20to%2010%20days. ''Symptoms of hand, foot, and mouth disease (HFMD) usually include fever, mouth sores, and skin rash. The rash is commonly found on the hands and feet''- so it can't be without fever.
If your child cries suddenly it means he has pain that comes and goes in waves
Unfortunately, I don't know what it can be, I only know what it can't be (HFM).

The doctor should be able to diagnose a sick baby, especially because he is in pain.
Good luck!