Lists common causes of skin rashes in those 12 and older. Covers allergies, chronic skin problems like eczema, or contact with poisonous plants like poison oak. Covers home treatment. Includes interactive tool to help you decide when to call a doctor.

Rashes in the groin or genital area are usually caused by irritation of the skin from many sources, such as clothes rubbing against the skin. Rashes that occur without other symptoms are usually minor and often go away with home treatment. Contact dermatitis A common cause of a rash is contact with a substance that...

Raspberry (or "red raspberry") is a fruit plant also known as Framboise, Framboisier Rouge, Framboisier Sauvage, Frambuesa Roja, Rubi Idaei Folium, Rubus, and other names. Red raspberry is a fruit. When used as a food product, raspberry is not likely to produce health benefits or side effects. When used as a...

Rattlesnakes are the most widely known of the pit vipers (family Viperidae). They are found throughout the United States and parts of Canada and account for most poisonous (venomous) snakebites in North America. They leave one, two, or three puncture marks on the skin, but you won't always see any marks...

Ravi thought he was coping well with his back pain. He had gotten used to having pain most days since he hurt his back in college while playing rugby. He figured some amount of pain would always be part of his life. But over a couple of months, Ravi stopped going out with friends after work. He didn't go on bike rides...

What is Raynaud's phenomenon? Raynaud's (say "ray-NOHZ") phenomenon occurs when the blood vessels in the hands and feet overreact to cold temperatures. The blood vessels are extra sensitive and become more narrow than normal, making the hands and feet feel very cold and numb for a short time. You may also hear this...

What are razor bumps? Razor bumps, or ingrown hairs, are small, irritated bumps on the skin. They happen after you shave, when strands of hair curl back on themselves and grow into the skin. They cause irritation and pimples. They also may cause scarring. How are razor bumps treated? The best way to treat razor bumps...

When a food comes in a package, take a look at the Nutrition Facts label and ingredient list on the package. Start with the "% Daily Value" column on the food label. A food is considered low in a specific nutrient (such as fat, saturated fat, carbohydrate, or sodium) if it has 5% or less of the daily value. A food is...

Incidence and Mortality It is difficult to separate epidemiological considerations of rectal cancer from those of colon cancer because epidemiological studies often consider colon and rectal cancer (i.e., colorectal cancer) together. Worldwide, colorectal cancer is the third most common form of cancer. In 2012, there...