This one nail disorder has a pretty unique name: clubbing. Clubbing is a condition where the tissue under the nail is thickened so that the nail becomes round and bulging, almost similar to an onion. In the case of a descending abnormality, the disorder is considered not too dangerous, but if this condition appears suddenly on your fingernail, there may be disease or health problems in the body.
Possible diseases that exist along with nail growth include long-term lung and heart disease, such as lung cancer, bronchiectasis, or endocarditis, as well as colitis or bowel inflammation (IBD), cirrhosis, and even polycythemia, too thick
