A scanning electron micrograph of a female<unk> <unk> .<unk> , also known as house<unk>  allergy, is a sensitization and allergic reaction to the droppings of house<unk> <unk> s. The allergy is common and can trigger allergic reactions such as asthma, eczema or itching. It is the manifestation of a parasitosis. The<unk> 's gut contains potent digestive enzymes (notably peptidase 1) that persist in their feces and are major inducers of allergic reactions such as wheezing. The<unk> 's exoskeleton can also contribute to allergic reactions. Unlike scabies<unk> s or skin follicle<unk> s, house<unk> <unk> s do not burrow under the skin and are not parasitic. The symptoms can be avoided or alleviated by a number of measures. In general, cutting down<unk>  numbers may reduce these reactions while others say efforts to remove these<unk> s from the environment have not been found to be effective. Immunotherapy may be useful in those affected. Subcutaneous injections have better evidence than under the tongue dosing. Topical steroids as nasal spray or inhalation may be used. House<unk> <unk> s (Dermatophagoides pteronyssinus) aggregate. Severe<unk> <unk>  infestation in the home has been linked to atopic dermatitis, and epidermal barrier damage has been documented.
Dust mite allergy
Insect sting allergy
Tree nut allergy
Garlic allergy
Wheat allergy
Shellfish allergy
Sesame allergy
Rice allergy