RASHES, LOCALIZED AND CAUSE UNKNOWN

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Shingles Rash on Right Flank

The photo shows the typical rash of shingles (also called Herpes Zoster.
There are multiple small blisters grouped together in one area of body (i.e., dermatomal distribution or "band" or "stripe"). It is unilateral, that is, it is present on only one side of the body.

Petechial Rash on Foot from Meningoccemia

Meningococcemia is a life-threatening illness, that progresses rapidly.
The photo shows a dark-reddish-purple spots on the top of the foot. These are referred to as petechiae.
Petechiae are small red or purple spots that do not disappear when pressure is applied to the skin. For example, if you press a glass down on the spots, they do not disappear. You can still see them through the glass.

Widespread Rash from Rocky Mountain Spotted Fever

Child's right hand and wrist displaying the characteristic spotted rash of Rocky Mountain spotted fever.
Rocky Mountain spotted fever is the most severe and most frequently reported rickettsial illness in the United States. The disease is caused by Rickettsia rickettsii, a species of bacteria that is spread to humans by ixodid (hard) ticks.

Sunburn-Like Rash from Toxic Shock Syndrome

This bright red, sunburn-like rash is from Toxic Shock Syndrome. It usually begins after either wound infection, recent surgery, or tampon use.
The symptoms of Toxic shock syndrome include a sudden onset of fever, chills, vomiting, diarrhea, muscle pains and rash. Hypotension (low blood pressure) also occurs.

Measles

This child shows a classic day 4 rash with measles.
Measles is an acute, highly contagious viral disease. Symptoms include fever, conjunctivitis (red eyes), runny nose, cough, and spots on the inside cheeks.
A red blotchy rash appears around day 3 of the illness, first on the face, and then becoming generalized.

Measles

This child with measles is showing the typical red blotchy rash on his buttocks and back during the 3rd day of the rash.
Measles is an acute, highly contagious viral disease. Symptoms include fever, conjunctivitis (red eyes), runny nose, cough, and spots on the inside cheeks.
A red blotchy rash appears around day 3 of the illness, first on the face, and then becoming generalized.

Face of Boy with Measles

Third day of rash.
Measles is an acute, highly contagious viral disease. Symptoms include fever, conjunctivitis (red eyes), runny nose, cough, and spots on the inside cheeks (inside of mouth).
A red blotchy rash appears around day 3 of the illness, first on the face, and then becoming generalized.

Symptom Definition

Rash on one part of the body (localized or clustered)
Small spots, large spots or solid red
Cause of rash is unknown

General Information

Three localized rashes that individuals may be able to recognize are: Athlete's Foot, insect bites, and poison ivy. If present, use that topic. If not, use this topic.
The main cause of a new localized rash is often skin contact with some irritant.
The main cause of a persistent localized rash is often contact dermatitis, which is an allergic reaction to skin contact with some substance.
Cellulitis is the medical term for an infection of the skin. There is spreading redness. The skin is also painful, tender to touch, and warm. There may or may not be any drainage or discharge. Antibiotic treatment is required.

See More Appropriate Topic (instead of this one) If

You have ATHLETE'S FOOT
The rash is from INSECT BITES
You have POISON IVY

Disclaimer: This information is not intended be a substitute for professional medical advice. It is provided for educational purposes only. You assume full responsibility for how you choose to use this information.

Reviewed 8/2004

Revised 7/2002

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