Intertrigo

  • Medical Author:
    Gary W. Cole, MD, FAAD

    Dr. Cole is board certified in dermatology. He obtained his BA degree in bacteriology, his MA degree in microbiology, and his MD at the University of California, Los Angeles. He trained in dermatology at the University of Oregon, where he completed his residency.

  • Medical Editor: William C. Shiel Jr., MD, FACP, FACR
    William C. Shiel Jr., MD, FACP, FACR

    William C. Shiel Jr., MD, FACP, FACR

    Dr. Shiel received a Bachelor of Science degree with honors from the University of Notre Dame. There he was involved in research in radiation biology and received the Huisking Scholarship. After graduating from St. Louis University School of Medicine, he completed his Internal Medicine residency and Rheumatology fellowship at the University of California, Irvine. He is board-certified in Internal Medicine and Rheumatology.

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Intertrigo facts

  • Intertrigo is a dermatitis that affects skin folds.
  • Intertrigo is caused when frictional forces, enhanced by heat and moisture, produce skin irritation.
  • Risk factors for intertrigo include obesity, heat, and humidity.
  • Intertrigo patients complain of redness, burning, and itching in the skin folds, most commonly in the groin, under the breast, and in the armpits.
  • Occasionally, long-standing intertrigo may produce a musty smell.
  • Intertrigo is diagnosed by visual inspection after eliminating infectious causes.
  • Treatment involves the reduction of frictional forces, humidity, and heat in the skin folds.
  • Intertrigo dermatitis can be infected by bacteria and fungi. Eruptions in the skin folds can occur in a number of other dermatological conditions aside from intertrigo.
  • Intertrigo can be prevented by losing weight and applying lubricating topical preparations prior to athletic endeavors.
  • The prognosis of intertrigo is excellent.

What is intertrigo?

Intertrigo is a very common inflammatory condition affecting areas of skin that are characteristically in contact with each other, such as the groin, armpits, under the breasts, and skin folds on the anterior torso. These areas of skin that are in contact with each other are referred to as the intertriginous zones. In obese individuals, skin folds may occur in a variety of other areas and so can be affected by intertrigo.

What causes intertrigo?

Simple intertrigo is an irritant dermatitis caused by the combination of frictional rubbing, increased temperature, and moisture. Intertrigo can be complicated by various microorganisms, including yeasts, dermatophytic fungi, bacteria, as well as allergic and irritant reactions to various medications and chemicals. There are also some uncommon exotic dermatologic diseases that have a predilection to appear in the intertriginous zones.

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What are risk factors for intertrigo?

Environmental factors play a major role in exacerbations of intertrigo. They include increases in temperature and humidity encountered most frequently during the summer months.

Activities such as bicycle riding or running, which produce repetitive movements, produce frictional forces which may injure the skin. The presence of large folds of skin, such as those that result from obesity, also enhances the likelihood of intertrigo.

What are intertrigo symptoms and signs?

Symptoms of intertrigo include itching and burning in the intertriginous zones. Occasionally, long-standing intertrigo may produce a musty smell. With intertrigo, these areas become inflamed and appear red and sometimes scaly.

What types of physicians diagnose and treat intertrigo?

Intertrigo can be diagnosed by most doctors purely on the basis of its appearance -- a red rash affecting one or more intertriginous areas. If the condition does not respond to conventional treatments, then a referral should be made to a dermatologist.

What are intertrigo home remedies and treatments?

Treatment of uncomplicated intertrigo primarily involves changing those environmental factors that have predisposed the patient to the condition. Areas of involvement are covered with a mild topical steroid like 1% hydrocortisone cream, which is available without a prescription, and then covered with zinc oxide paste or ointment (Desitin).

What are complications of intertrigo?

Intertrigo may be complicated by a variety of infectious microorganisms that must be eliminated before the condition is likely to improve. Since fungal infections are very common in the intertriginous zones, it is important to perform appropriate tests (such as microscopically analyzing small scrapings of affected skin) to exclude this problem. Most dermatologists and some primary care physicians are able to perform potassium hydroxide mounts of scale obtained from the irritated skin right in the office and visualize the fungus under the microscope. There are a variety of other skin diseases that may present a picture similar to intertrigo but are treated quite differently. If the condition does not respond to the simple treatment methods listed above, further diagnostic procedures may have to be done to elucidate the true diagnosis.

What is the prognosis of intertrigo?

If the patient is willing to change certain habits that may predispose to intertrigo the prognosis is quite good. It almost always resolves rapidly.

Is it possible to prevent intertrigo?

Simple intertrigo can be prevented by liberally applying a lubricating ointment like petrolatum directly into the intertriginous skin fold predisposed to irritation prior to any physical activity. Carefully drying the affected area after bathing or showering is also helpful. In obese individuals with a large abdominal skin folds (panniculus), weight reduction can diminish the folds so that intertrigo is prevented.

REFERENCES:

Janniger, Camila K., Schwartz, Robert A., Szepietowski, Jacek C., and Reich, Adam. "Intertrigo and Common Secondary Skin Infections." American Family Physician 72.5 Sept. 1, 2005: 833-838.

Kalra, Monica G., Kim E. Higgins, and Bruce S. Kinney. "Intertrigo and Secondary Skin Infections." American Family Physician 89.7 Apr. 1, 2014: 569-573.

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Reviewed on 8/10/2016
References
REFERENCES:

Janniger, Camila K., Schwartz, Robert A., Szepietowski, Jacek C., and Reich, Adam. "Intertrigo and Common Secondary Skin Infections." American Family Physician 72.5 Sept. 1, 2005: 833-838.

Kalra, Monica G., Kim E. Higgins, and Bruce S. Kinney. "Intertrigo and Secondary Skin Infections." American Family Physician 89.7 Apr. 1, 2014: 569-573.

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