[Reactions to drugs. A review of literature].

Adverse drug reactions are originated by immunological and non-immunological mechanisms. Estimated incidence is of 6.7%, and the incidence of mortal reactions is of 0.

[Coexistent diseases in allergic asthmatic patients. A study of 100 cases].

Background: The prevalence of asthma in Mexico is of 12% in the general population. Allergic illnesses diminish the quality of life and increase the costs of health services. In our country there is a lack of information about asthma and the concomitant presence of other allergic diseases in adults.