Early detection of any ailment is the first step for less suffering and early cure, and for early detection you may not always have to go to the doctor. Some diseases can be detected by easy symptoms shown by your fingernails.
Be it chronic liver disease, heart issue, Psoriasis, Thyroid disease, Arthritis or Melanoma. their early symptoms lies in your nails, and also of many other diseases.
This is how Your fingernails can reveal hidden ailments and diseases.