Allergic rhinitis is a chronic respiratory disease of high prevalence that has great impact on the standard of living, and the performance at work or school. Allergic rhinitis is related with other allergic diseases, such as asthma, sinusitis, conjunctivitis, and otitis. One of the main allergens that cause it are the mites belonging to the Dermatophagoides genus, mostly the species D. pteronyssinus and D. farinae, although other studies have shown the importance of Blomia tropicalis in these allergic conditions. This review article aims to analyze the meaning of allergic reactions to such mites, especially those of the genus Dermatophagoides, with regards to studies performed in a national and Latin-American context. It also explains the immunological mechanisms linked to the processes of type I hypersensitivity in patients sensitized to these allergens, including the sensitization mechanism and specific lgE production, and the role of cytokines as part of the process. In addition, the diagnostic methods and treatments used, including immunotherapy, will be discussed.