Some lumps and bumps are easy to hide under clothing -- but not so when you develop an unsightly bump on your lip. A bump at the corner of your lips is most often due to something simple, such as a cold sore or chapped lips. But there are other possibilities, too, including skin cancer.

Armpit odor usually first occurs in puberty, when sweat from your apocrine glands combines with bacteria on your body. According to WorsleySchool.net, armpit odor tends to get worse as you age. Many people begin using underarm deodorant or antiperspirant in puberty or early adolescence.

Obesity causes problems all over the body, and the skin is no exception. From dark, velvety patches to red, itchy skin-fold infections, skin tags and even psoriasis, a long list of skin problems can result from being obese. Some are due to the strain of the added weight. Others may relate to skin moisture and chafing.

Excessive underarm sweating is an embarrassing problem, leading to stained clothing, body odor, anxiety and even social isolation. In some cases, underarm sweating is easily controlled with the correct application and use of antiperspirants.

Night sweats are a symptom of many disorders, some quite serious. A comprehensive health history and physical exam by a physician is necessary to obtain an accurate diagnosis.

Rogaine is the brand name for the drug minoxidil, which is designed to decrease hair loss and encourage new hair growth in both men and women. According to the Mayo Clinic, the exact way in which Rogaine works is not completely understood. However, its effects tend to last as long as the treatment.

Like the rest of your body, your scalp can develop certain conditions that may cause you worry or concern. If they don't cause pain, skin bumps on the back of your scalp are generally no cause for alarm and are usually caused by several common conditions.

Aluminum in its usual form is not harmful to the skin or any other body part. It naturally occurs as part of the earth's crust and is commonly used for many products from soda cans to space shuttles.

Three-year-old children are prone to picking up many of the viruses that they come into contact with, partly because they have not yet fully developed their immune system and partly because they tend to touch everything they see.

According to the Food Allergy and Anaphylaxis Network, about 7 million Americans have a fish allergy, with tuna, halibut and salmon being the most allergenic fish. If you’re allergic to salmon, you will need to remain under a doctor’s care to prevent further complications. MayoClinic.

A pimple-like rash on the face can arise with a variety of infectious and noninfectious skin conditions that affect people of all ages. In many cases, the condition resolves without treatment. For chronic conditions, doctors often recommend topical or oral medications.

Rashes are a common rite of passage during childhood. Many illnesses expose children to both fevers and rashes, though fortunately most are of no great concern beyond the need to provide immediate comfort.