Dr. Mark K Yamanaka M.D.

Croup is described as an infection of the upper respiratory tract, involving the trachea and larynx, which causes obstruction in breathing. The trachea and larynx connect the upper portion of the lungs to the mouth. Croup is characterized by a barking cough.Croup is very common in children. Those...

It is very hard to diagnose lupus. Since two individuals can have different signs of lupus, doctors have a hard time diagnosing it and treating it effectively. To diagnose lupus, it can take a long time, which can be distracting to both the doctor and the affected person. The symptoms of lupus can...

Pneumonia is a lung infection that affects the air sacs. The sacs are either filled with fluid or pus causing a cough with phlegm. The symptoms of pneumonia range from mild to severe, which could be life-threatening. People from all age groups, from infants to old age, people with other health...

IntroductionMucus is a moist film, which helps keep your nose from drying out and protect your lungs from foreign substances, such as bacteria, viruses, dust, and other harmful intruders. It keeps you healthy but you may only notice it whenever you are sick. Mucus becomes thicker when you are sick,...

What is pleurisy?Also known as pleuritis, is a condition that occurs when the pleural membranes lining the lungs and the inner aspect of the chest wall becomes inflamed, which causes them to rub against each other with friction during breathing.Pleurisy makes breathing difficult and painful. It is...

How can steroids improve my symptoms?Steroids make your breathing easier if you have COPD. Physiologically, steroids try to reduce the swelling of the airways. Mucus production is also decreased with the use of steroids according to some studies. The dosage and length of course of steroid...