Asthmatic patients who exhibit bronchoconstriction are characterized by wheezing, breathlessness, chest tightness and coughing. The characteristic of the reversible inflammatory process in asthma and a good response to therapeutic measures characterize the evolution of the disease, which is marked by intermittent exacerbations. However, the lack of these symptoms can define a subgroup of patients who are considered hypoperceivers and who evolve with a worse prognosis for disease control