Rash, Age 11 and Younger
Healthy skin is a barrier between the inside of the body and the outside environment. A rash means some change has affected the skin. A rash is generally a minor problem or is part of an illness that will go away on its own. A rash may be caused by contact with a substance outside the body, such as poison ivy (Reference contact dermatitis Opens New Window), or by other more serious illnesses, such as Reference measles Opens New Window or Reference scarlet fever (strep throat with rash).
Generalized rashes over the whole body that are caused by viruses are more common in babies and young children than in adults. A rash may be caused by a viral illness if the child also has a cold, a cough, or diarrhea, or is in a day care setting where he or she is with other children with viral illnesses. Most rashes caused by viruses are not serious and usually go away over a few days to a week. Home treatment is often all that is needed to treat these rashes.
After a child has had a rash caused by a virus, his or her body generally builds an immunity to that virus. This immunity protects the child from getting that specific viral illness and rash again. Common rashes caused by viruses include:
- Reference Chickenpox Opens New Window Reference Opens New Window (varicella). This rash is a common, contagious illness caused by a type of herpes virus.
- Reference Fifth disease Opens New Window. This facial rash looks like the cheeks have been slapped. It also causes a lacy, pink rash on the arms and legs, torso, and buttocks.
- Reference Roseola Opens New Window (roseola infantum). This rash occurs about 3 days after a high fever.
- Unknown virus. Sometimes the specific virus that causes a rash is never known.
Localized rashes which affect one area of the body have many different causes and may go away with home treatment. Common localized rashes that occur during childhood include:
- Reference Diaper rash Opens New Window. This rash is caused by rubbing, moisture, chemicals, or bacteria in the baby's urine or stool; substances in disposable diapers; or soaps used to wash cloth diapers.
- Reference Impetigo Opens New Window Reference Opens New Window. This bacterial skin infection is caused by strep or staph bacteria.
- Reference Heat rash (prickly heat) Opens New Window Reference Opens New Window. This rash often results from a well-meaning parent dressing his or her baby too warmly, but it can happen to any baby in very hot weather.
- Reference Cold sores Opens New Window. These are sometimes called fever blisters. Cold sores are clusters of small blisters on the lip and outer edge of the mouth caused by the herpes simplex virus.
- Reference Contact dermatitis Opens New Window Reference Opens New Window. This rash is caused by contact with a substance, such as food, soap, or lotion, that causes an Reference allergic reaction Opens New Window. Most contact dermatitis is mild and goes away when your child's skin no longer comes in contact with the substance.
- Reference Cradle cap. Cradle cap is an oily, yellow scaling or crusting on a baby's scalp. It is common in babies and is easily treated. Reference Cradle cap Opens New Window Reference Opens New Window is not a part of any illness and does not mean that a baby is not being well cared for.
Rashes that may require a visit to a doctor include:
- Lyme disease, which is caused by a bacteria carried by deer ticks in some areas. A characteristic expanding red rash usually occurs at the site of the tick bite and is followed by flu-like symptoms, such as a headache, chills, fever, body aches, and stiffness.
- A rash that looks like a sunburn and a fever of 102°F (38.9°C) or higher. This type of rash may be caused by a rare condition called Reference toxic shock syndrome Opens New Window.
- A very rare and serious type of generalized red rash called toxic epidermal necrolysis (TEN). This type of rash may cause the skin to peel away, leaving large areas of tissue that weep or ooze fluid like a severe burn. TEN may occur after the use of some Reference medicines.
To know how serious the rash is, other symptoms that occur with the rash must be evaluated. Reference Check your child's symptoms to decide if and when your child should see a doctor.
|By:||Reference Healthwise Staff||Last Revised: Reference February 21, 2012|
|Medical Review:||Reference William H. Blahd, Jr., MD, FACEP - Emergency Medicine
Reference H. Michael O'Connor, MD - Emergency Medicine