I am 48 years. Old. I came across an article in regard to healthy nails where it was stated that if we have some dark straight line visible below our nails it can be a serious skin problem. I am having medium dark line in thumb and light lines in index and middle finger in right hand (no injury). I am worried. Please guide and help me out.

Suggestions offered by doctors on Lybrate are of advisory nature i.e., for educational and informational purposes only. Content posted on, created for, or compiled by Lybrate is not intended or designed to replace your doctor's independent judgment about any symptom, condition, or the appropriateness or risks of a procedure or treatment for a given person.