This clinical trial is focused on studying an allergy to Lepidoglyphus destructor, a type of dust mite. The trial aims to determine the allergenic strength of a solution made from Lepidoglyphus destructor extract. This is done by comparing it to a standard solution of histamine hydrochloride, which is commonly used in allergy testing. The study involves using a skin prick test, a method where small amounts of the allergen are placed on the skin to see if a reaction occurs. The trial will use three different solutions: a negative control with sodium chloride, a positive control with histamine hydrochloride, and the test solution with Lepidoglyphus destructor extract.

The purpose of the study is to find out the concentration of the Lepidoglyphus destructor extract that causes a skin reaction similar in size to the reaction caused by the histamine solution. Participants will undergo skin prick testing, where these solutions are applied to the skin to observe any allergic reactions. The study will help in understanding how potent the Lepidoglyphus destructor extract is in causing an allergic reaction compared to the standard histamine solution.

Participants in the study will have a history of inhalant allergies, such as rhinitis or asthma, specifically to Lepidoglyphus destructor. The study will involve a simple procedure where small drops of the solutions are placed on the skin, and the size of any resulting wheal, or raised bump, is measured. This will help in assessing the allergenic potency of the Lepidoglyphus destructor extract in comparison to the known effects of histamine.