R00-R09: Symptoms and signs involving the circulatory and respiratory systems

R06: Abnormalities of breathing

Abnormalities of breathing, as a group of conditions, predominantly involve irregular patterns or disruptions in the normal process of inhalation and exhalation. This includes difficulties such as rapid breathing (hyperventilation), slow breathing (hypoventilation), shallow breathing (hypopnea), and other similar variations. Often these conditions arise due to issues with the body's respiratory system or the neural control mechanisms that govern breathing. Symptoms commonly linked with these conditions include shortness of breath, chest discomfort, dizziness, and in severe cases, loss of consciousness. Disease progression can vary, sometimes remaining stable while at other times escalating rapidly, especially if a simultaneous medical condition such as heart disease, lung infection or a neurological disorder is present. A wide range of body systems can be affected indirectly due to inadequate oxygen supply or buildup of waste gases in the body caused by these breathing abnormalities.