Infection: 1  Fungus or yeast cause changes in the color, texture, and shape of the nails. 2  Bacterial infection may cause a change in nail color or painful areas of infection under the nail or in the surrounding skin. 3  Viral warts may cause a change in the shape of the nail or ingrown skin under the nail. 4  Certain infections (especially of the heart ...
Columbia, Maryland. Columbia is a principal city within the Baltimore metropolitan area, located in Howard County, Maryland. It is a planned community consisting of 10 self-contained villages. It began with the idea that a city could enhance its residents' quality of life.
Although the United States Census Bureau reported that as of the last year of the 20th century, the population of Columbia had been only 10,311 people, by 2010 this figure had grown to 10,400. The Susquehanna River flows past the Borough of Columbia into the Chesapeake Bay. The city of Lancaster is the county seat.