Fever is generally not a concern, but some cases do require medical attention. The Nemours Foundation recommends that you seek immediate care if your child shows the following behaviors or symptoms: won’t stop crying; exhibits extreme irritability or fussiness; has trouble waking up; develops a rash or purple spots that look like bruises; has blue lips, tongue, or nails; has a stiff neck; has a severe headache; is limp or refuses to move; has trouble breathing that doesn’t improve when the nose is cleared; is leaning forward and drooling; has a seizure; and complains of moderate-to-severe belly pain. Nemours Foundation, November 2018