Authors : Ana Morais Mendes and Carlos Neto Braga Asthma is a chronic inflammatory disease of the bronchi. It is one of the most frequent chronic diseases in the world and the main one in pediatric age. In our country, it reaches about 700 thousand people, which is equivalent to approximately 1 in 15 Portuguese people. Meet the allergology clinical team from Hospital da Luz network. The content published in the Health Guide is intended for the general public and is provided for informational and educational purposes only. It does not replace individual medical assessment, diagnosis, or personalized clinical advice from a qualified healthcare professional. The content is produced or reviewed by physicians and other healthcare professionals at Hospital da Luz and is based on the knowledge available at the time of publication or the most recent update, as indicated at the beginning of each item.