Welcome to healthcare magic forum
Thank you for your query
i understand your concern regarding your health problem.
it look like infection ,may be bacterial or viral.
you need to consult doctor
for better treatment.
is also due to infection only.
chance of viral infection is high.
you can take anti pyretic medicine for fever
for rash ,you can apply calamine
lotion and moisturizer.
if itching develop ,you can take anti histaminic medicine.
I hope I answered your query