Dr. Clifford Thomas Pereira MD

Introduction Discovering blood after a bowel movement can be a frightening experience. If you notice a bright red to black-colored blood in your stool, in the toilet bowl, or on the toilet paper, you may be experiencing rectal bleeding. Having blood in your stool does not always signal a serious...

Carpal tunnel release surgery is a medical procedure that is used to relieve symptoms caused by carpal tunnel syndrome (CTS). Such symptoms include pain in the hand, tingling, and numbness. The procedure involves separating the ligaments in your hand to help relieve pressure on the nerve that...

Cataract is the blurring of the lens part of the eye that can lead to complications in vision. Aging is the cause of the common form of cataract. It grows slowly and should symptoms develop they should not be ignored as this condition worsens with time. Congenital defects, previous eye surgery,...

Gallstones just like other stones such as kidney stones, can be very commonly found. However, their symptoms are not very visible. Someone could be suffering from gallstones and be completely unaware. Gallstones are essentially hard, stone-like deposits present in the gallbladder, which is a...

In a thyroid biopsy, a small tissue sample of your thyroid gland is removed and then examined under a microscope to test for an infection, cancer cells, and other thyroid disorders. The thyroid is a small gland located in lower part of the neck, just below the larynx. The gland's main function is...

Sleep apnea is a sleep breathing disorder. It is characterized by repetitive pauses in breathing, which may occur several times per hour and may last for 10 seconds. It is usually a chronic condition. It results in poor sleep quality and excessive sleepiness in daytime. The most common type is...