Most likely food reaction. If you breastfeed it also matters what you eat. My baby reacts like that to sweets even formula is too sweet so I make it less sweet for him by diluting with a bit more water that on instructions
this does not look like hand foot and mouth. my baby just had this. it’s a food reaction on some sort
It looks like a little food reaction or maybe too much moisture around his mouth making a little rash :)
Probably hands foot mouth disease