SKIN LESIONS PRODUCED BY ARTHROPODS

Abstract:
Skin lesions resulting from arthropod exposure may arise via various pathologic pathways. There may be direct damage to human skin from mouthparts, fangs, stingers, etc., or indirect damage such as immune reactions to arthropod saliva or venom injected upon biting. Hypersensitivity may develop against venoms (stinging arthropods) or salivary proteins (biting arthropods). Infectious disease agents transmitted by arthropods may also be responsible for skin lesions. Rocky Mountain spotted fever, Lyme disease, and leishmaniasis are notable examples of arthropod-borne diseases with skin manifestations. Finally, secondary infection may result from arthropod bites or stings (especially as a result of scratching), leading to impetiginous lesions.