Melanoma occurs when the pigment-producing cells that give color to the skin become cancerous.

Lewy body dementia is a disease associated with abnormal deposits of a protein called alpha-synuclein in the brain. These deposits, called Lewy bodies, affect chemicals in the brain whose changes, in turn, can lead to problems with thinking, movement, behavior, and mood. Lewy body dementia is one of the most common causes of dementia. Lewy bodies are named for Dr. Friederich Lewy, a German neurologist. In 1912, he discovered abnormal protein deposits that disrupt the brain's normal functioning in people with Parkinson's disease. These abnormal deposits are now called "Lewy bodies."

Enlarged lymph nodes may be the result of infection, inflammation, or other disease such as lymphoma.

When someone has MS, their immune system mistakenly attacks healthy tissues within their central nervous system. Specifically, MS causes inflammation and damage to tissues called the myelin sheaths, which surrounds nerve fibers and acts as insulation to help signals and information move about the brain and spinal cord.

An arrhythmia is defined as any change in rhythm to the heartbeat (irregular heartbeat). Tachycardia is any condition in which the heart beats too quickly; bradycardia, in contrast, occurs when the heart beats too slowly or in an irregular pattern. One of the most common types arrhythmia is atrial fibrillation, a fast, irregular heart rhythm that can sometimes lead to stroke or heart failure

A heart attack occurs when part of the heart muscle is damaged or dies because of a lack of blood flow and oxygen to the area. Atherosclerosis, the leading cause of heart attacks, occurs when plaque builds up along the artery walls. Over time, the plaque hardens and may block the arteries. If you experience symptoms of a heart attack, call 911.

Adrenal tumors, or masses, are either benign or malignant growths on a patient's adrenal gland. Both benign and malignant tumors of the adrenal cortex may produce steroid hormones, with important clinical consequences. The adrenal glands, otherwise known as supra renal glands, are triangular shaped organs that sit on the top of each kidney. Each gland is approximately one-half inch to one inch wide and two to three inches long. As a part of the endocrine system, they release hormones that regulate metabolism. What is the adrenal gland? The adrenal glands are approximately 2.5x1 inch, yellowish

Hyperhidrosis is the medical term for excessive sweating. Sweating is the body's way of cooling itself. In the case of palmar hyperhidrosis, the sweating of the hands is excessive. People with this condition may suffer embarrassment from their constantly "wet" hands. These individuals cannot hold glasses of liquid safely, hold objects without getting them "wet," hold hands or shake hands comfortably.

Hyperhidrosis is the medical term for excessive sweating. Sweating is the body's way of cooling itself. In the case of palmar hyperhidrosis, the sweating of the hands is excessive. People with this condition may suffer embarrassment from their constantly "wet" hands. These individuals cannot hold glasses of liquid safely, hold objects without getting them "wet," hold hands or shake hands comfortably.

Degenerative disc disease occurs when spinal discs degenerate, or wear down. The discs of the spine cushion the interlocking vertebrae and act as shock absorbers for the back, allowing it to bend, flex and twist. Discs break down over time as a natural part of the aging process. Spinal discs are composed of two layers – a tough, firm outer layer and a soft, jelly-like core. Small tears in the outer layer may cause the soft material in the center to leak out, causing a disc to bulge or rupture. This is a leading cause of back pain, primarily in the lower back and the neck. However, not everyone