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Trombiculosis: Symptoms, Prevention, and Treatment

  • Trombiculosis, also referred to as chigger bite, is a skin condition brought on by the bite of specific chigger species of mites. 
  • Tall grass, woods, and other outdoor areas are home to chiggers, which typically bite people in the summer.

why do chiggers bite some and not others, how to get rid of chigger bites

Trombiculosis Symptoms

  • A red papule that may show a small, central, punctum-like area is the primary lesion.
  • Marked pruritus is a recurring symptom.
  • In crops, lesions frequently cluster on the ankles, behind the knees, or along areas where clothing presses against or contacts the skin.
  • Bullous lesions can form in patients who are extremely sensitive to chigger bites, but this rarely happens.
  • Secondary excoriation, which can result in persistent papules or superimposed prurigo nodules, may be more pronounced than the primary lesion.
  • Another possibility is a secondary bacterial infection.

Etiology and Risk Factors

  • Chigger bites are brought on by the larval stage of specific species of trombiculid mites. 
  • Trombicula alfreddugesi is the most common species in the United States, and chiggers are most common in the Midwest and Southeast humid regions. 
  • The red six-legged larvae wait in wait on grass blades or other short vegetation, usually about 15 inches off the ground, leap onto a passing host, attach, and feed for three to four days, then fall to the ground. The chigger is hardly visible to the human eye and is less than 1 mm in size.

Why do chiggers bite some and not others?

  • Bodies produce different amounts of heat and carbon dioxide. For example, those who are overweight and pregnant women emit more heat and carbon dioxide. Additionally, the increased levels of lactic acid odors from exercisers attract bugs.


  • Skin scrapings may occasionally reveal the mite, but since the organism only briefly lives on humans and cannot complete its life cycle there, they are not frequently used.

How Long do Chigger Bites Last?

  • Chigger bites can last up to two weeks but typically go away on their own within a few days.

How to get rid of chigger bites?

In this paragraph, we will get to know how to heal chigger bites fast.


  • The use of topical pramoxine-containing products may offer some temporary but immediate relief from the itching.

Topical Corticosteroids 

  • In 24 to 48 hours, topical corticosteroids applied twice a day offer only modest relief.

Intralesional triamcinolone

  • Intralesional triamcinolone (2.5 mg/mL) may be used to lessen inflammation and pruritus in exceptional circumstances only.

Home Remedies for Chigger Bites

  • Many patients have been taught by their families and friends to treat chigger bites with nail polish or various types of glue to suffocate the mite. 
  • In many cases, the mite has already dropped off. Occlusion actually increases heat retention at the site of the bite, which will increase pruritus. The only potential benefit is that the polish or glue will reduce skin damage from excoriations.


  • Avoiding areas of tall grass, woods, and other outdoor spaces where chiggers are known to be present is the best way to avoid getting chigger bites. If you must visit these locations, make sure to wear long sleeves and pants and to apply insect repellent. 
  • Additionally, it's crucial to take a shower and change into fresh clothes as soon as you can after being in these places.


  • Chigger bites can result in the skin condition trombusosis. It can result in excruciating itchiness, redness, swelling, and in some cases, infection. Avoiding outdoor areas where chiggers are present, using insect repellent, and wearing protective clothing are all crucial for preventing chigger bites. 
  • The main goal of treatment is to reduce symptoms like pain and itching. It's crucial to get medical help if you think chiggers may have bitten you and are experiencing infection-related symptoms.



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