Decreased thyroid production can lead to brittle nails. Women who are over 50 have the highest risk of developing thyroid problems. Hypothyroidism may not cause noticeable symptoms in its early stages, or symptoms might be subtle or easily blamed on another factor, the Mayo Clinic advises.

Dry skin on the fingertips can be caused by many different factors. Skin on the fingertips may be dry and flaky, or in severe cases, cracking or peeling.

Dry skin can be caused by simple lifestyle and environmental factors, or it can be a sign of a more serious skin condition. You can try using simple preventive measures to heal your skin, such as using a moisturizing oil after you shower and wearing breathable natural fabrics like cotton or silk.

At 35, you might be experiencing some of the inevitable skin conditions that come with age. These include wrinkles, sagging skin, paleness, thin appearance, age spots and dryness.

Freckles and dark spots on your face are the result of sun exposure. Also called age spots, they occur when production of melanin, which is the dark pigment of your skin, is accelerated by ultraviolet light. Most of the time they are harmless, but you may want to remove them for cosmetic reasons.

Acne affects between 40 to 50 million Americans, according to the American Academy of Dermatology. But just because your acne puts you in good company, doesn't mean you have to like your situation.

The goal in preventing a scab from scarring is promoting tissue repair in your system. While you may just focus on the site of the scab, it is important to consider your overall approach toward your healthy, healing skin such as adding vitamins that help skin repair.

Most people know the health consequences of smoking, but cigarettes do more than cause damage to your lungs and heart. The nicotine in cigarette smoke can leave nasty-looking stains on your fingers.

You might be meticulous about your hair during the daytime hours, but do little to take care of your hair while asleep. As you toss and turn overnight, your hair cuticles get roughened up by rubbing on pillowcases -- and you get that just-woke-up look in the morning.

The common skin disease acne occurs when hair follicles beneath the skin clog with a mixture of skin bacteria and oil. Generally, these unsightly lesions and blemishes occur primarily on the face, causing severe emotional distress for acne sufferers.

Acne scars come in four basic forms: rolling, boxcar, ice-pick and keloid. Rolling, boxcar and ice-pick scars are depressed scars, which cause a “hole” in the skin’s surface, while keloid scars are raised, thick scars. Rolling and boxcar scars can be very shallow, superficial to moderately deep.

Age spots, also called liver spots, are flat, pigmented marks on your skin, similar to, but larger than, freckles. They become more common after decades of sun exposure. Though harmless and painless, they can be cosmetic concerns.