Warts are small, harmless growths that appear most frequently on the hands and feet. Sometimes they look flat and smooth, other times they have a dome-shaped or cauliflower-like appearance. Warts can be surrounded by skin that is either lighter or darker. Warts are caused by different forms of Human

Vitiligo refers to the development of white patches anywhere on the skin. With this condition, pigment-forming cells (known as melanocytes) are destroyed by the immune system causing the loss of pigmentation in the skin. Vitiligo usually develops between the ages of 10 and 40. It affects both men and

Wrinkles are a natural part of the aging process. They occur most frequently in areas exposed to the sun, such as the face, neck, back of the hands and forearms. Over time, skin gets thinner, drier and less elastic. Ultimately, this causes wrinkles - either fine lines or deep furrows. In addition to

A tattoo is created by injecting ink into the dermis (the second layer of skin) to incorporate a form of skin decoration. Tattooing is practiced worldwide and has often been a part of cultural or religious rituals. In Western societies today, tattooing has re-emerged as a popular form of self-decoration. Technically,

Because of the ultraviolet radiation it emits, the sun is inherently dangerous to human skin. In fact, the American Academy of Dermatology stipulates that there is no safe way to tan. Tanning is the skin's natural response to damage from the sun. Additionally, the Environmental Protection Agency proclaims

According to the American Academy of Dermatology and the U.S. Department of Health and Human Services, ultraviolet (UV) radiation from tanning beds, tanning booths and sun lamps are known carcinogens (cancer-causing substances). Exposure to UV radiation during indoor tanning has been proven to increase

"Rash" is a general term for a wide variety of skin conditions. A rash refers to a change that affects the skin and usually appears as a red patch or small bumps or blisters on the skin. The majority of rashes are harmless and can be treated effectively with over-the-counter anti-itch creams, antihistamines

Shingles is a painful rash that is caused by the varicella zoster virus. It usually appears as a band or strip of blisters on one side of the body that goes from the spine around the front to the breastbone. However, shingles can also appear on the neck, nose and forehead. Shingles derives from the same

The skin is the body's largest organ and accounts for roughly 18% of an adult's weight. It serves as a protective outer layer that keeps in moisture and keeps out invasive organism (like infections). It protects our organs against injury. It also helps regulate the body's temperature and has self-healing

Skin cancer is the most common form of human cancers, affecting more than one million Americans every year. One in five Americans will develop skin cancer at some point in their lives. Skin cancers are generally curable if caught early. However, people who have had skin cancer are at a higher risk of

Scabies is a harmless but very itchy and highly contagious skin condition caused by mites that burrow into the skin and lay eggs. Symptoms include a severe itch, often worse at nighttime, and thin burrow tracks made of tiny bumps or blisters on the skin. Humans are allergic to the mites, which is what

Psoriasis is a skin condition that creates red patches of skin with white, flaky scales. It most commonly occurs on the elbows, knees and trunk, but can appear anywhere on the body. The first episode usually strikes between the ages of 15 and 35. It is a chronic condition that will then cycle through

Rosacea is a chronic skin condition that causes facial redness, acne-like pimples, visible small blood vessels on the face, swelling and/or watery, irritated eyes. This inflammation of the face can affect the cheeks, nose, chin, forehead or eyelids. More than 14 million Americans suffer from rosacea.

Roughly 300,000 people in the United States suffer from scleroderma. This chronic connective tissue disease results from an over-production of collagen in the skin and other organs. Scleroderma usually appears in people between the ages of 25 and 55. Women get scleroderma more often than men. The disease

Pruritus refers to the sensation of itching on the skin. It can be caused by a wide range of skin conditions, including dry skin, infection, fungus, other skin diseases and, rarely, cancer. While anyone can experience pruritus, it is more commonly seen among the elderly, diabetics, people with suppressed

Rocky Mountain Spotted Fever is a bacterial infection transmitted by ticks. It is relatively rare, but can cause serious damage to the heart, lungs and brain. The difficulty lies in diagnosis because many people are unaware that they've been bitten by a tick. Three types of ticks transmit the Rickettsia