3. Pneumonia
Pneumonia refers to inflammation of the air sacs in one of the lungs or both. The infection floods the air sac with fluid paralyzing the respiratory efficiency. The air sac may be filled with fluid or pus causing coughs with stains of blood or pus, chills, difficulty breathing, and fever. Pneumonia can be caused by organisms like bacteria, fungi, and viruses. This condition can either be mild or life-threatening. In fact, in the U.S. alone nearly 1 million people seek medical care for pneumonia each year while up to 50,000 individuals die annually from the condition.
Other symptoms of pneumonia include fatigue, below normal body temperatures especially in adults of 65 years and above, nausea, diarrhea, and vomiting. Severe symptoms like coughing up blood may not show in newborns and infants but they can vomit experience fever and nausea. Children below the age of 2 years, and adults of 65 years and above are at higher risk of contracting pneumonia.