Shortness of breath is by far the most common of emphysema symptoms. Most people with emphysema first notice something's wrong when they become winded during a previously routine activity. This might be climbing stairs or mowing the lawn. The shortness of breath in emphysema results from structural changes in the lungs.
The African city with the largest population is Lagos, Nigeria. In 2014, the city was estimated to have a population of 21 million people.
Lagos is the largest city in Nigeria covering an area of 385.9 square miles. It is the third-most populous city in Africa with an estimated population of 7,937,932. As of now, it is the second-fastest growing city in Africa.