High Fever in 1-Year-Olds: Critical Temperatures and Emergency Signs

Critical fever threshold for a 1-year-old: 105°F (40.6°C) or higher.

Seek immediate medical care for:

• Temperature ≥104°F (40°C)
• Convulsions/seizures
• Confusion, lethargy, excessive drowsiness
• Stiff neck
• Severe headache
• Painful urination or low urine output
• Severe abdominal pain or vomiting
• Skin rash or bruising

Call emergency services if any of these danger signs appear.