I have recently noticed a mole on my ear, is it a sign of some skin problem or may be skin cancer?

Need more info: Hard to do dermatology without seeing the problem. Rule of thumb any growth anywhere on the body must be evaluated by a physician. Skin cancers are very sly and sometimes it takes a biopsy to determine what the growth is. Be proactive. Call your family physician for an appt.

Maybe: Most moles of course are harmless. Read about melanoma and look at pictures of melanoma to know some of the key distinguishing characteristics of a suspicious mole that needs to be removed.

New mole on ear: Any new mole should be examined by your doctor. Usually due to sun damage. The one we worry about the most is Melanoma, look for Asymmetry, Boarder irregularity, Color variation in the mole, Diameter > 1/4 ", Evolving or changing in size, shape, color, elevation, or another trait, or any new symptom such as bleeding, itching or crusting — points to danger. Basal cell most common open sores, red patches, pink growths, shiny bumps, or scars.

Dermatology Bx: Best to show it to your doc or dermatologist who can recommend biopsy or not. Most are not cancer, but superficial spreading melanoma often starts in a dysplastic nevus or mole. The ABCD's indicating possible cancer are assymetry, border irregularity, color change or more than one color, diameter, and elevation, itching or bleeding. http://cancer.about.com/od/skincancermelanoma/p/abcdeskincancer.

Not necessarily: Bonnie, you may develop moles during your lifetime. The two keys are to apply sunscreen, and keep an eye on it. If it changes size or shape, or the coloration changes, then get it checked out by your doctor. Hope this helps!