What can our fingernails tell us about our health? Doctors and nurses will often check a patient’s fingernails for clues about different health conditions.
Club nails:
Club nails can be caused by conditions that cause low blood oxygen, such as congenital heart disease, or severe lung disease.
Spoon nails:
Spoon nails can be caused by iron deficiency anemia.
Indented lines across the nail:
“Beau’s lines” are indentations that run across the nail, and can be caused when growth under the cuticle is interrupted by injury or severe illness:
White lines across the nail:
“Leukonychia” are white spots, and are typically caused by minor trauma in healthy individuals:
Purplish horizontal lines across the nail:
“Mees Lines” are transverse lines caused by arsenic poisoning:
Thickened yellow nails:
Thickened yellow nails can be the result of a fungal infection.
Healthfacts.blog 