Hi, It looks like a drool rash. Do consult the PD for this to advise right medicine.
It could be due to saliva or milk rash. Consult doctor if it get worst.
Allergy or rash. Best to go to doctor to get ointment or other care
It might be allergy bring your Lo to pd to confirm.
Drool rash. Doesnt look too serious. Dont worry.
Best to bring your lo to the pediatrician...
I would suggest to go doctor.