My finger swelling since 6 month?

Many possibilities: Hands, feet, fingers, and toes can swell for many reasons. Sometimes it is arthritis of the joints. It can also be heart disease or kidney disease, leading to the storing of excess water in the body. Sometimes hormonal imbalances or effects of medications can cause swelling. One can begin by seeing a primary care doctor for an evaluation. The doctor can refer to specialists if needed.

Look into cause: If this is one sided, i would seriously recommend evaluation for possible mechanical lymphatico-venous obstruction. If bilateral there may be a variety of other causes. Start with your internist.