Hi. Greetings. Please take paracetamol for fever, oral anti histamine for itching and see a qualified dermatologist near you at the earliest for confirmation of diagnosis. Lot of viral fevers may resemble measles. Also drug allergies too can look the same. So see a specialist soon. Also stay away from elderly and very young children since they'll be at highest risk of contracting infection from you.
Drink lots of fluids and remain well hydrated. Can apply calamine to soothe the skin rash. Hope this helps. You can send snaps/ further queries on follow up chat . warm regards Dr Govind Suresh Mittal.