7How to Diagnose Blue Fingernails
To diagnose and figure out the underlying cause of blue fingernails, your doctor may need to review your family history and medical history. You need to answer several questions about the symptoms and whether you have had any medical conditions since birth. They also conduct a physical exam to check for the signs and symptoms. Factors like the lighting and temperature in the room should be taken into consideration. Some tests should be done as well to rule out the possibility of other medical conditions associated with cyanosis. [8]
