2) Hippocratic nails or finger clubbing
Hippocratic nails, a phenomenon also known as finger clubbing, are caused by a progressive bone deformation that occurs as a consequence of many chronic diseases. In this case it would be better to consult your doctor, because you may be suffering from quite serious diseases, such as lung disease, heart disease, gastrointestinal, hyperthyroidism, vascular abnormalities of the affected arm, thymoma, and thalassemia.
