Dr. Frank B. Cortazar MD

When you pee and see a stream of rusty red urine, the sight fills you with a sense of dread. You suspect that the discoloration is due to the presence of blood. A pungent odor may fuel the anxiety. The only way to confirm suspicions is through a urinalysis recommended by a primary caregiver.  A...

A kidney biopsy, also called renal biopsy, is a medical procedure which involves taking a sample tissue of the kidney for laboratory analysis. This procedure helps your doctor know the type of disease on your kidney, how severe the disease is and the best treatment option. A kidney biopsy is also...

Headaches that recur two to three times during a short period of time are known as cluster headaches. This may last for few weeks, to months. These headaches often occur after sleep and recur throughout the day. It usually appears during the same time of the year, or season of the year. It may...

IntroductionRhabdomyolysis is a complex medical condition that involves a rapid destruction of the skeletal muscle tissues along with the release of muscle proteins and other muscle cell contents to leak outside of the cells and into the bloodstream. This leakage includes the following muscle...

Rhabdomyolysis is a condition in which the muscles are rapidly broken down resulting in the release of myoglobin — the muscle protein — into the blood. This is a rare condition, and the release of myoglobin into the blood can lead to damage of kidneys. It is mostly caused by muscle injury and...

What is shivering?Exposure to cold or rapid shifts in temperature usually causes uncontrollable shivering. However, many other possible causes can cause shivering or chills. An uncontrollable shivering that persists for a longer time may indicate an underlying illness that requires immediate medical...