A mole is a collection of pigmented cells that generally presents itself as a small, brown-hued spot on the surface of your skin. It is possible for acne to form either under -- or on top of – moles, since moles are generally just a discoloration of your skin.

A rash is an area of irritated, swollen and often red skin. Rashes may be itchy, bumpy, scaly, crusted or blistered, as described by the National Institutes of Health. Rashes may appear quickly, or develop over time. Some rashes will resolve on their own while others may require treatment.

When the nervous system detects the body overheating, it responds by changing breathing and blood flow patterns, causing a person to sweat as a cooling mechanism. Sweat can happen anywhere in the body, but is generally associated with the armpits, hands, feet and face.

Cold sores are a recurring condition consisting of tiny, raised blistered on the skin that are filled with fluid. Typically occurring around the mouth area, they occasionally occur in the nose, chin, fingers or even inside the mouth.

Using a folk remedy, you can use oregano oil to remove skin tags — or harmless overgrowths of skin, typically appearing on the groin, neck, armpits or other areas where there are skin folds. The Skin Center in Laguna Hills, California, suggests that it is possible to use a home remedy to remove skin tags.

Vitamin B12, also called cobalamin, is a cofactor involved in essential body processes such as cellular metabolism, DNA replication and red blood cell formation. Inadequate dietary B12, or poor absorption of vitamin B12 can cause a deficiency with a range of signs, symptoms and disorders.

A mole may be any growth on your skin that contains nevus cells. It typically has a raised surface and may develop a stalk. Moles that have an especially high surface are hanging moles, also known as skin tags. Hanging moles are generally harmless, although they may be cosmetically undesirable.

If you experience significant hair loss, chances are that one of your relatives suffered from pattern baldness and passed the genes responsible for the condition on to you, since the Mayo Clinic notes that most cases of balding are hereditary.

Sweating plays an essential role in maintaining your body's homeostasis, or balance. Sweating helps keep your body temperature at around a healthy 98.6 degrees Fahrenheit. However, sweat is also linked to body odor.

A strange paradox exists with lipomas. They are made up of fat but don't go away when you reduce your level of body fat. Almost by definition, lipomas don't respond to weight loss. If you have one or multiple lipomas, consult your physician about your treatment options. Sometimes, it's best to just leave them.

The human papillomavirus, or HPV, causes nonmalignant growths on the skin called warts, according to MayoClinic.com. Warts generally look like raised, rough bumps on the skin. Warts may cause pain and embarrassment. See a physician to determine if the skin growth is a wart.

Tripping on the stairs, dropping an object on your foot or accidently running into something can all result in bruising your skin. Aging, vitamin deficiencies, certain medications and gender can also make you more susceptible to the two types of bruises -- hematomas or ecchymosis.