When to Call Your Doctor
The signs and symptoms of infection that are listed here should be brought to your doctor's attention. Of course, whenever your child has a symptom that concerns you, you should not hesitate to call your doctor, whether or not the symptom appears on this list.
Although some symptoms of illness differ depending on a child's age, some are the same for all children.

For any child, infant to adolescent, call your doctor if you observe any of the following:

High fever (The level of fever that is considered significant depends on the age of the child, the illness, and whether the child has other symptoms with the fever.)

Chills that make the child shake all over

Loss of consciousness

Extreme sleepiness or unexplained lethargy

Unusual excitement or hysterical crying

Sudden weakness or paralysis of any part of the body

Seizures (convulsions) or uncontrollable shaking of an arm or leg

Severe headache

Pain, heaviness, or stuffiness around the nose, eyes, or forehead

Nasal fluid that is discolored, bad-smelling, or bloody

Sudden hearing loss

Earache

Fluid discharge from the ear

Sudden decrease in vision

Eyes that are red, swollen, and watery, with or without blurred vision

Eyes that are extremely sensitive to light, especially if your child also has a fever, headache, or stiff neck

A yellow color in the whites of the eyes or in the skin, especially with pain in the abdomen and/or dark or tea-colored urine

Stiffness or pain in the neck, especially with fever or headache

Severe sore throat, especially with trouble swallowing or speaking

Uncontrolled drooling because of painful swallowing

Difficulty breathing, especially with pale or bluish color of the lips or nails

Unusually rapid breathing

Severe or persistent cough, especially if it brings up bloody or discolored mucus

Vomiting for 12 hours or more

Vomiting of blood

Intense or unusual abdominal pain

Swollen or abnormally large abdomen

Diarrhea that is streaked with blood or mucus

Pain in the middle of the back, especially with fever or with discomfort while urinating

Painful or unusually frequent urination

Urine that is discolored, bloody, cloudy, or has an unusual smell

Discharge from the penis

Vaginal discharge that is thick and white, brown or discolored, or smells bad

Pain, redness, or swelling of a joint that can't be explained by exercise or injury

A cut or scrape that oozes pus or becomes hot, red, tender, or swollen

A sudden rash, or sudden crop of blotches or blisters, especially over a large area of the body

Special Signs and Symptoms - birth to 1 month old

Fever (rectal temperature of 100.4ºF should prompt a call to the doctor)

Baby suddenly becomes "floppy" - loses muscle tone all over

One or both eyes are pink, bloodshot, have a sticky white discharge, or eyelashes that stick together

Diarrhea in newborns - more than six to eight watery stools per day (breast-fed newborns often have more loose stools than formula-fed babies; check with your doctor for guidance)

Redness or tenderness around the navel area

White patches in the mouth

Nose blocked by mucus so baby can't breathe while feeding

Forceful vomiting

Vomiting that lasts for 12 hours or more

Vomiting with fever and/or diarrhea

Baby stops feeding normally

Crying for an abnormally long time

Special Signs and Symptoms - 1 month to 1 year

Fever (rectal temperature 100.4ºF in infants younger than 3 months, 101ºF in infants ages 3 to 6 months, and 104ºF in a child 6 months or older should prompt a call to the doctor)

Baby refuses to eat and misses several feedings

Baby is unusually cranky and irritable or unusually sleepy