Dr. Jay S Himmelstein M.D.

Do I Have a Sleep Disorder?Sleep normally follows a pattern that alternates between rapid eye movement (REM) sleep and non-REM sleep. Changes in this pattern affect sleep resulting in disorders that may lead to tiredness and lack of concentration and attention during day time. Sleep can be disrupted...

The liver primarily produces cholesterol. Each day, it makes 1,000 mg of cholesterol. The cells lining the small intestine can also produce cholesterol. If the level of cholesterol in the body is low, it may mean that the body is producing low amounts of cholesterol and is going to shut down. In...

What is pleurisy?Pleurisy is a condition, in which the lining that surrounds the lungs and the interior of the chest cavity is inflamed. Due to the inflammation of the pleura, this condition is also called as pleuritis. The pleural space is the space between the lungs and the chest cavity wall....

Meningitis is a rare type of infection caused by different organisms like bacteria, a virus, and fungus. The infection usually starts in some other parts of the body like sinuses, ears, or upper respiratory tract. Successful treatment of meningitis depends on several factors like cause of the...

Our human bodies are a complex network of nerves, blood vessels, muscles, and visceral organs. While our skin is the outermost layer holding everything together, on the inside, it is a network of strong muscle fibers that hold all our internal organs in place. A hernia occurs when there is a weak...

IntroductionPolyuria refers to frequent urination and passing excessive amounts of urine every time a person urinates. Normally, adults pass approximately 1-2 liters of urine per day. However, when there is an excessive urination volume of more than 3 liters a day, it is considered as...