Thomas Michael Lehman MD

What is sarcoidosis?Sarcoidosis is an inflammatory disease, which is characterized by the growth of granulomas or tiny collections of inflammatory cells in various parts of the body. When the immune system is slowed down and when these numerous clumps form, they tend to interfere with the organ’s...

What is Raynaud’s disease?Raynaud’s disease, also known as Raynaud’s syndrome or Raynaud’s phenomenon, is a rare blood vessel disorder described by a French physician named Maurice Raynaud in 1862. In this condition, the blood vessels that carry blood from the heart to other parts of the...

Congestive heart failure is a common condition affecting the muscles of the heart and peripheries of the body. It leads to inefficient pumping action from the heart, which in turn results in a lesser amount of blood reaching the various parts of the body. Being highly prevalent in people aged over...

High blood pressure or hypertension is a chronic condition that may lead to other complications, including organ damage, gradually over a period of time. The blood pressure may become very high and severe all of a sudden resulting in a condition referred to as hypertensive crisis. Hypertensive...

SymptomsThe affected person may exhibit one or more of the following symptoms. Symptoms are not always consistent, as they may flare up or disappear at any time. ...

What is triamterene-hydrochlorothiazide?Triamterene-hydrochlorothiazide is a water pill or diuretic used for the treatment of edema (fluid retention) and high blood pressure. This medication is usually prescribed to patients who have low amounts of potassium in the body or individuals who are at an...