Picking or scratching at a pimple could make the skin irritation worse and take longer to clear up. Several options are available to deal with a pimple.

Most freckles and moles are non-cancerous skin lesions that are more cosmetically bothersome than medically problematic. Occasionally, moles interfere with shaving or rub against clothing.

According to the University of Maryland Medical Center, a rash is defined as any change in the texture or color of the skin. A skin rash on the hands and feet may be caused by an external irritant such as poison ivy or may be the symptom of an illness.

Pinching your arm can cause blood vessels to break, leading to bruises. While it may appear red and swollen at first, your arm may turn a blue or purple color as the bruises start to appear. Most bruises heal on their own, but may cause discomfort in the process.

Dermatographia is a skin condition that produces bumps, or inflammation, on your skin after you scratch it. Dermatographia is not fully understood, but it appears to be some type of allergic response, the Mayo Clinic says. Often it's not a serious condition and doesn't require medical treatment.

Skin is a protective covering meant to guard the internal systems from infection. When skin develops a break, your body will take measures to isolate the break and fight bacteria by forming a film or crust. This is true regardless of what caused the break in the skin. A crusty bump can be the result of many conditions.

According to MayoClinic.com, the skin's pigment-producing melanocytes usually distribute color evenly throughout the surface of your skin. Sometimes, however, clusters of pigmented cells develop, resulting in dark spots commonly called moles.

Bacteria of the scalp can be found with other scalp problems. According to MayoClinic.com, seborrheic dermatitis is caused by a fungus, but bacteria is usually present with the fungus.

Springtime is misery time for anyone with pollen allergies. Grasses, ragweed and pigweed may be the chief causes of hay fever, or allergic rhinitis, but big wind-pollinated shade trees make their contribution, as well.

Doctors recommend exercise on most days of the week as an effective way to lose weight and ensure your overall well-being. Scalp itchiness that occurs during a workout can hinder your weight-loss efforts and is often linked to an allergic reaction.

Itching behind the knee is commonly caused by heat buildup in warm weather, an allergic reaction to soaps and skin care products, or from improper hygiene. However, some remedies can help to solve this problem, along with proper washing, according to Jennie Harding, author of "

Creams for old stretch marks are designed to help mask and even remove stretch marks that make your skin look old and deformed. While old stretch marks can also be removed with laser surgery, stretch mark creams are a cost effective way to look younger and keep your skin uniform and tight.