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Thus, in humans, the nail of the index finger grows faster than that of the little finger; and fingernails grow up to four times faster than toenails. [10] In humans, fingernails grow at an average rate of approx. 3.5 mm (0.14 in) a month, whereas toenails grow about half as fast (approx. average 1.6 mm (0.063 in) a month). [11]
Human nails grow at a rate which varies with many factors: age, the specific digit, as well as nutrition. However, typically in healthy populations fingernails grow at about 0.1 mm/day and toenails at about 0.05 mm/day.
While ingrown nails can occur in the nails of both the hands and the feet, they occur most commonly with the toenails (as opposed to fingernails). [citation needed] A common misconception is that the cause of an ingrown toenail is the nail growing into the paronychium, but it can also be caused by overgrown toe skin. [2]
When nails are clubbed, they grow downward and look like the round part of an upside-down spoon. Here is an illustration from Medline Plus, which is a resource website from the National Institutes ...
2. You buffed your nails too much. Just as moisture-laden nails can be prone to peeling and splitting, so can nails that are dried out from too much buffing, according to Dr. Peters.
There are a few reasons why nails could be thin, brittle, and rough on the surface. Brittle nails are sometimes a symptom of metabolic conditions, such as thyroid disease and iron deficiency anemia .
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 ...
Nail clubbing - nails that curve down around the fingertips with nailbeds that bulge is associated with oxygen deprivation and lung, heart, or liver disease. Koilonychia - spooning, or nails that grow upwards. Associated with iron-deficiency anaemia or vitamin B 12 deficiency. [citation needed] Pitting of the nails is associated with psoriasis.