[MIA 2021, Comprehensive Asthma Management. Guidelines for Mexico].

Background: Asthma continues to be one of the most frequent chronic respiratory diseases in our country. New methods for diagnosis and treatment have been described; accordingly, the international guidelines were renewed.

Objective: To create a national platform for the development of updated guidelines, solidly based on evidence: Comprehensive Asthma Management (Spanish acronym: MIA).

[Atypical clinical presentation of flavivirus. Case report].

The first report of chikungunya virus (CHIKV) in Mexico was in may 2014, in Jalisco, and has disseminated along the country in such a way that now is considered a relevant emergent vector-transmitted infection. It is clinically diagnosed by abrupt onset fever, asthenia, arthralgias, myalgias, headache and rash. In the clinical case, we described a women from Guerrero that had pulmonary symptomatology associated to CHIKV, which is an atypical clinical presentation that has been reported only in a hundred cases worldwide.

[Prevalence of chronic urticaria of autoimmune origin at the Regional Hospital Adolfo López Mateos].

Background: Chronic urticaria is a common skin disorder characterized by recurrent, transitory, itchy wheals with individual lesions lasting less than 24 hours and affecting patients for six weeks or longer. In adults it has been shown that approximately 40% of the patients with chronic urticaria have autoimmune urticaria.

Objective: To determine the prevalence of autoimmune urticaria in adults with chronic urticaria.