High Fever: This is often the first sign, reaching up to 104°F (40°C). Rash: A reddish, flat or slightly raised rash may appear after a few days of fever. Muscle and Joint Pain: While not as severe as in adults, children might experience general body aches and fussiness. Loss of Appetite and Nausea/Vomiting: This can lead to dehydration, so monitoring fluid intake is important. Irritability and Fatigue: Children might be more lethargic and cranky than usual. Headache: While less common in young children, some might experience headaches.