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  2. Nail (anatomy) - Wikipedia

    en.wikipedia.org/wiki/Nail_(anatomy)

    Fingernails require three to six months to regrow completely, and toenails require twelve to eighteen months. Actual growth rate is dependent upon age, sex, season, exercise level, diet, and hereditary factors. [12] The longest female nails known ever to have existed measured a total of 8.65 m (28 ft 4.5 in). [13]

  3. Beau's lines - Wikipedia

    en.wikipedia.org/wiki/Beau's_lines

    A researcher found Beau's lines in the fingernails of two of six divers following a deep saturation dive to a pressure equal to 305 metres (1,001 ft) of sea water, and in six of six divers following a similar dive to 335 metres (1,099 ft). [9] They have also been seen in Ötzi the Iceman.

  4. Polyonychia - Wikipedia

    en.wikipedia.org/wiki/Polyonychia

    The signs/symptoms of polyonychia are very easy to detect: two or more nails growing on the same finger or toe. The nails can either be separate, small nails (micronychia) or one wide, almost complete nail, the digit affected could also be wider than normal

  5. Nail disease - Wikipedia

    en.wikipedia.org/wiki/Nail_disease

    Onychorrhexis also known as brittle nails, is brittleness with breakage of fingernails or toenails. Paronychia is a bacterial or fungal infection where the nail and skin meet. Koilonychia is when the nail curves upwards (becomes spoon-shaped) due to an iron deficiency. The normal process of change is: brittle nails, straight nails, spoon-shaped ...

  6. This change in your fingernails could be a sign of lung cancer

    www.aol.com/lifestyle/change-fingernails-could...

    According to Medical News Today, nail clubbing occurs in 5%-15% of people with lung cancer, though it can develop due to a variety of other conditions, including severe cases of chronic ...

  7. Lunula (anatomy) - Wikipedia

    en.wikipedia.org/wiki/Lunula_(anatomy)

    The lunula (pl.: lunulae; from Latin 'little moon') is the crescent-shaped whitish area of the bed of a fingernail or toenail.. In humans, it appears by week 14 [1] of gestation, and has a primary structural role in defining the free edge of the distal nail plate (the part of the nail that grows outward).

  8. Nail clubbing - Wikipedia

    en.wikipedia.org/wiki/Nail_clubbing

    Nail clubbing, also known as digital clubbing or clubbing, is a deformity of the finger or toe nails associated with a number of diseases, anomalies and defects, some congenital, mostly of the heart and lungs. [2] [3] When it occurs together with joint effusions, joint pains, and abnormal skin and bone growth it is known as hypertrophic ...

  9. The hidden dangers of acrylic nails and why you might ... - AOL

    www.aol.com/lifestyle/2015-10-22-the-hidden...

    Pay close attention to how strong and think your nails are. Extremely thin nails may not be the best for acrylics. 4. It might be hard to spot, but infection below the nail bed can become all too ...