Trombiculosis

Trombiculosis is a dermatological condition caused by the larvae of certain species of mites in the family Trombiculidae. These mites are commonly referred to as "chiggers" or "harvest mites". The condition is characterized by intense itching and redness, and is often contracted through contact with infested vegetation.

Etiology

Trombiculosis is caused by the parasitic larvae of mites in the family Trombiculidae. The most common species responsible for the condition in humans is Leptotrombidium deliense, although other species can also cause the condition. The larvae, commonly known as "chiggers", are tiny (0.2-0.4 mm) and are often not noticed until symptoms develop.

Symptoms

The primary symptom of trombiculosis is intense itching, which usually begins several hours after the mites have attached to the skin. Other symptoms can include redness, swelling, and the formation of small, itchy bumps or blisters. In severe cases, the condition can lead to secondary bacterial infections if the skin is broken by scratching.

Diagnosis

Diagnosis of trombiculosis is typically based on the characteristic symptoms and a history of exposure to infested vegetation. The mites themselves are often not seen, as they usually detach from the skin once they have finished feeding. However, they can sometimes be seen under a microscope if a skin scraping is taken.

Treatment

Treatment for trombiculosis primarily involves relieving the symptoms. This can be achieved through the use of topical corticosteroids to reduce inflammation and itching, and antihistamines to control allergic reactions. In cases where a secondary bacterial infection has developed, antibiotics may be prescribed.

Prevention

Prevention of trombiculosis involves avoiding contact with infested vegetation, and using insect repellents and protective clothing when in areas where the mites are known to be present. Regularly checking the skin and removing any attached mites can also help to prevent the condition.

See also

• Scabies
• Dermatitis
• Parasitic skin infestation

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