Evan Webeck is a reporter for MLB.com and covered the Dodgers on Tuesday. Todd Zolecki has covered the Phillies since 2003, and for MLB.com since 2009. Read his Phillies blog The Zo Zone, follow him on Twitter and listen to his podcast. This story was not subject to the approval of Major League Baseball or its clubs.
Onychoschizia or splitting of the fingernails is a common problem seen by dermatologists. The term onychoschizia includes splitting, brittle, soft or thin nails. Onychoschizia is more common in women. Only very rarely are internal disease or vitamin deficiencies the reason (iron deficiency is the most common).nychoschizia or splitting of the fingernails is a common problem seen by dermatologists. The term onychoschizia includes splitting, brittle, soft or thin nails. Onychoschizia is more common in women. Only very rarely are internal disease or vitamin deficiencies the reason (iron deficiency is the most common).
Diseases: 1  Disorders that affect the amount of oxygen in the blood (such as heart problems and lung diseases including cancer or infection) may cause clubbing. 2  Kidney disease can cause a build-up of nitrogen waste products in the blood, which can damage nails. 3  Liver disease can damage nails. Thyroid diseases such as hyperthyroidism or hypothyroidism may cause brittle nails or splitting of the nail bed from the nail plate (onycholysis). Severe illness or surgery may cause horizontal depressions in the nails (Beau's lines).