Grooves Across The Fingernails
They are also called Beau's lines. Grooves or deep lines across the fingernails may be a warning sign to show decreased blood circulation to the fingers, deficiency of zinc and presence of infection-causing bacteria that may cause fever often. The grooves in the nails may also be caused because of cold temperature and chemotherapy.
Brittle Or Crumbly Nails
This can be caused by washing clothes in detergents or a result of ageing. However, when these are not the reasons then brittle nails can be an indication of a fungal nail infection. This condition is medically termed as Lichen planus. Symptoms of this include rashes formed on the skin and mouth leading to itchiness. Brittle nails can also indicate thyroid diseases (hypothyroidism) and arthritis.
Nail Clubbing
In nail clubbing, the nails and fingertips are curved and clubbed together. It can be present by birth and is a heredity condition. However, if it occurs suddenly, it can be an indication of low oxygen level in the blood, heart and liver diseases, and even AIDS.
White Lines
White lines can run across and parallel to the bottom of the fingernail. However, white spots or streaks on the nails are normal. If white lines run across the fingernails, it can be a sign of low levels of protein, malnutrition or liver diseases.
Yellow Or Off-white Nails
Prolonged use of a nail polish can cause nails to become pale or yellowish over a period of time. Yellow nails can also be a sign of liver diseases and jaundice. Respiratory tract infection can also result in the nails becoming pale.
Dark Stripes
These stripes run down the nails and can be a harmless thing. However, in some cases, it can indicate a type of skin cancer affecting the nail bed. It may affect a single nail only.
Red Or Brown Streaks
These spots or streaks can occur under the nails and are the lines of blood caused due to injury to the nails. The damaged blood vessels bleed inside and this condition is called splinter haemorrhages. This is a harmless condition. However, if the reason is not an injury and many nails are affected, it can indicate some underlying disease.
Loose Nails
In this condition, nails become loose and can even separate from the nail bed. This may be caused due to thyroid disease, impaired blood circulation, advanced diabetes, allergic reaction to drugs, etc.
Source : http://www.boldsky.com/health/wellness/2015/what-your-nails-say-about-your-health-091060.html
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