Symptoms of Serious Illness in Babies and Children

It's essential for parents and caregivers to recognize the symptoms of serious illnesses in babies and children, as prompt medical attention can significantly improve outcomes. The following are some common symptoms that may indicate a serious illness:

Baby (0-12 months)

  • Fever: A temperature above 100.4°F (38°C) in babies under 3 months, or above 102°F (39°C) in babies over 3 months.
  • Vomiting: Persistent vomiting, especially if it's projectile or contains blood or bile.
  • Diarrhea: Frequent, watery stools, or stools with blood or mucus.
  • Refusal to feed: A decrease in feeding or refusal to feed, which can lead to dehydration.
  • Lethargy: Excessive sleepiness or difficulty waking up.
  • Irritability: Persistent crying or fussiness that cannot be soothed.
  • Changes in breathing: Rapid or labored breathing, grunting, or wheezing.
  • Changes in skin color: Pale, blue, or yellowish skin tone.

Toddlers (1-3 years) and Preschoolers (4-5 years)

  • Fever: A temperature above 104°F (40°C) that lasts for more than 3 days.
  • Sore throat: Severe sore throat, especially if accompanied by difficulty swallowing or breathing.
  • Cough: Persistent coughing, especially if it's severe or produces yellow or green mucus.
  • Ear pain: Severe ear pain, especially if accompanied by fever or discharge.
  • Vomiting: Persistent vomiting, especially if it's projectile or contains blood or bile.
  • Diarrhea: Frequent, watery stools, or stools with blood or mucus.
  • Abdominal pain: Severe abdominal pain, especially if accompanied by vomiting, fever, or changes in bowel movements.
  • Changes in urine output: Decreased urine output or dark-colored urine.

School-age Children (6-12 years) and Teenagers (13-18 years)

  • Fever: A temperature above 103°F (39.4°C) that lasts for more than 3 days.
  • Headache: Severe headache, especially if accompanied by fever, confusion, or stiff neck.
  • Sore throat: Severe sore throat, especially if accompanied by difficulty swallowing or breathing.
  • Cough: Persistent coughing, especially if it's severe or produces yellow or green mucus.
  • Chest pain: Severe chest pain, especially if accompanied by shortness of breath or fever.
  • Abdominal pain: Severe abdominal pain, especially if accompanied by vomiting, fever, or changes in bowel movements.
  • Changes in urine output: Decreased urine output or dark-colored urine.
  • Confusion or disorientation: Sudden onset of confusion, disorientation, or difficulty speaking.

General Symptoms

  • Rash: A rash that's spreading rapidly, especially if accompanied by fever or itching.
  • Skin infections: Redness, swelling, or pus around a cut or wound.
  • Eye problems: Redness, discharge, or vision changes in one or both eyes.
  • Seizures: Sudden onset of seizures, especially if accompanied by fever or loss of consciousness.

If you suspect your child is experiencing any of these symptoms, it's essential to seek medical attention promptly. In some cases, a serious illness can progress rapidly, and timely intervention can significantly improve outcomes.

Article last updated on: 11th April 2025.
If you have any feedback, please get in touch.

Not just another AI Scribe.
Diagnosis. Guideance. Transcripions. Notes.

Medical Disclaimer

Diagnosis Pad is intended to provide additional information to health professionals in relation to patient care. Healthcare professionals should exercise their own judgment in determining whether to act on the information provided. The information provided is not intended to be a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of a physician or other qualified health provider with any questions you may have regarding a medical condition. Never disregard professional medical advice or delay seeking it because of something you have read on this site.