Edges on the nail surface

Perfect nails tend to have a smooth surface with no distinct ridges or lines on them. Edges on nails appear when a person is likely to suffer from arthritis or an abnormal condition of lupus when the immunity system of the body attacks its own tissues.

Dunk nails

Such a condition may arise due to a mishap or simply by pushing them too hard. Albeit this, it can also be caused due to a deficiency of zinc content in the body or weak immunity or itchy dry patches around the skin.