Asthma is a chronic disease that affects the airways. The airways are the tubes that carry air in and out of the lungs. The airways narrow or become inflamed in asthma. This is because the airways are so sensitive to the irritants that cause asthma in other people.
The causes of asthma can be varied. Pollutants and viruses are often the cause of asthma in infants. Some children may be exposed to allergens like dust mites, cockroaches, ragweed, and various household cleaners that contain chemicals like methyl mercaptan. People who smoke may also be susceptible to asthma as these chemicals make the airways less sensitive to outside stimuli.
Other causes of asthma are not caused by outside influences. They can sometimes be internal. People with severe allergies such as rhinitis or asthma may also have the condition. Patients with severe allergies and asthma can experience chest pains and wheeze. In addition, they may find it difficult to breathe.
Respiratory infection may also be the cause of asthma in asthma patients. Children who are diagnosed with bacterial or viral infections can also develop asthma. As a result, it is important for doctors to keep a check on these types of infections.
In addition, certain weather conditions and their causes may influence the way in which a patient experiences an attack of asthma. Weather conditions like wind, cold, or dry air can make a person feel more uncomfortable. This, in turn, can lead to an exacerbation of asthma symptoms.
The causes of asthma may be varied. The most common causes of asthma can be found in the connection between the lungs and the central nervous system. This is a complex system, but the brain sends signals to the rest of the organs. When the signals are not sent correctly, it can lead to an attack of asthma.
Physical causes include chemical reactions in the blood vessels that can bring about inflammation. Many the diseases such as cancer, diabetes, infections, immunodeficiency diseases, and even poor diet can be associated with asthma. Most of these diseases can be controlled through preventive measures.
Eczema can also cause an attack of asthma because it is caused by the overproduction of histamines in the body. Certain allergens can also lead to attacks of asthma.
Dust mites are the most common allergens that asthma sufferers encounter. These mites are also known to be responsible for a number of allergic disorders including hay fever, asthma, and allergic rhinitis.
Pruritus, the classic wheezing feeling, and an asthmatic response to allergens can also be caused by this particular type of mite. Allergic rhinitis may also be caused by mites that are found in the nasal cavity.
An attack of asthma is always temporary and will not last more than an hour, but it will cause temporary damage to the respiratory tracts. The common symptoms of asthma are wheezing, coughing, shortness of breath, and tightness in the chest. For some patients, these symptoms can also be caused by sinus problems.