(October 2014) Leukonychia (or leuconychia), also known as white nails or milk spots, is a medical term for white discoloration appearing on nails. It is derived from the Greek words leuko (white) and nychia (nails). The most common cause is injury to the base of the nail (the matrix) where the nail is formed.
There is generally little depth to the content of these articles. Articles are written by staff members or freelance writers. The main purpose of popular periodicals is to entertain the reader, sell products (their own or their advertisers'), and/or promote a viewpoint.
From this attention grabbing opener, you would need to move to the next part of the introduction, in which you offer some relevant background on the specific purpose of the essay. This section helps the reader see why you are focusing on this topic and makes the transition to the main point of your paper.