Juan Manuel Mercado M.D.

Sinusitis, or sinus infection, is a very common medical condition often confused with a cold or flu. Sinusitis as a condition refers to the swelling of the underlying tissue lining found in the sinuses. Healthy sinuses are like small sacs filled with air; however, when these get clogged with germs...

What is Pleurisy?Pleurisy, also known as pleuritic is when the pleural membranes lining your lungs and chest cavity rub against each other causing a sharp stabbing pain that exacerbates while you breathe in.Pleurisy can be categorized as acute or chronic pleurisy depending on the duration of the...

Arthritis is a term used to describe about two hundred different types of ailments that affect the joints and its cartilage and surrounding connective tissue. These diseases are progressive degenerative diseases and can be very painful. Because arthritis has such a vast range of causes and symptoms,...

Knee pain is a common complaint that we hear every day. People may complain of a sudden pain either in one knee or both knees, and most of the time, it is due to either overusing the knee joint or due to an injury. In many cases, you really don’t have to consult a doctor as the pain will...

What is Lupus?Systemic lupus erythematosus, also known as lupus, is a disease of the immune system. The immune system protects the body from infection. In lupus, however, the immune system turns against the body, leading to tissue damage and illness. Thus, lupus is called an autoimmune disease.Men...

Hernia is a condition which can develop in both men and women. It can be classified into various types depending on its anatomical location. Following are the most common types of hernias that you must know about.1) Inguinal HerniaThis is the most common type of hernia which affects about 2% of the...