It could be chicken pox.
For fever take Tab Paracetamol 500 mg whenever you have fever.
Tab Domiperidone 10 mg 3 times a day , half an hour before you eat or drink anything.
Tab Ranitidine 150 mg 2 times a day along with Tab Domiperidone, half an hour before eating or drinking.
Next Steps
To see a doctor to confirm the diagnosis
If chicken pox then you will need Antivirals as well.
Health Tips
Apply Calamine lotion over the skin.
Do not scratch the skin as that can cause infection of the area.
Drink plenty of fluids and keep yourself hydrated.
Have a bath everyday, avoid saop .