Rodent mite dermatitis

Rodent mite dermatitis
Synonyms	Rat mite dermatitis, Tropical rat mite dermatitis
Pronounce	N/A
Specialty	N/A
Symptoms	Pruritus, erythematous papules, vesicles, urticaria
Complications	Secondary infection
Onset	Acute
Duration	Self-limiting
Types	N/A
Causes	Mite bites, specifically from Ornithonyssus bacoti, Liponyssoides sanguineus, Laelaps echidnina
Risks	Exposure to rodents or rodent-infested environments
Diagnosis	Clinical diagnosis, history of exposure
Differential diagnosis	Scabies, flea bites, bed bug bites, contact dermatitis
Prevention	Rodent control, environmental sanitation
Treatment	Antihistamines, topical corticosteroids, antibiotics for secondary infection
Medication	N/A
Prognosis	Good with treatment
Frequency	Common in areas with high rodent populations
Deaths	N/A

Rodent mite dermatitis is a skin condition caused by the infestation of mites that primarily live on rodents. These mites can occasionally infest humans, causing a range of skin symptoms.

Causes

Rodent mite dermatitis is caused by mites from the family Laelapidae and Myobiidae. These mites are ectoparasites, meaning they live on the surface of their host. They primarily infest rodents such as rats and mice, but can also infest humans if their primary host is not available.

Symptoms

The primary symptom of rodent mite dermatitis is pruritus, or intense itching. This is caused by the mite's bites and the subsequent allergic reaction in the skin. Other symptoms can include redness, swelling, and a rash. In severe cases, the constant scratching can lead to skin infections.

Diagnosis

Diagnosis of rodent mite dermatitis is often based on the presence of symptoms and a history of exposure to rodents. A skin scraping may be taken to identify the presence of mites. However, because the mites are often not present on the human host, diagnosis can be challenging.

Treatment

Treatment for rodent mite dermatitis involves addressing the symptoms and eliminating the source of the mites. Topical creams and oral antihistamines can be used to relieve itching. In severe cases, oral steroids may be prescribed. To eliminate the mites, it is necessary to remove any infested rodents and thoroughly clean the area.

Prevention

Prevention of rodent mite dermatitis involves controlling rodent populations and avoiding contact with infested areas. This can be achieved through pest control measures and maintaining clean living and working environments.

See also

• Scabies
• Dermatitis
• Mite