House dust mite

Indoor environments, specifically within pillows, mattresses, upholstered furniture, and carpets where skin scales accumulate.

Mainly detritus such as flakes of dead human and animal skin (dander).

They thrive in high humidity and warm temperatures. They are microscopic and typically go unnoticed by the human eye; they undergo a life cycle of egg, larva, protonymph, tritonymph, and adult.

They do not bite or sting but are a major source of allergens. Their waste products and decaying body parts can trigger asthma, eczema, and allergic rhinitis in sensitive individuals.