The integumentary system is the body’s outermost layer. Composed of skin, hair, nails, glands, and nerves, its main job is to protect your insides from elements in your environment, like pollution and ...

Ridges in nails can develop due to a current or past illness or injury. A healthy nail is typically smooth or has barely perceptible vertical lines running from the cuticle to the tip. When there are ...

Even though a black line on the nail could be something minor or normal, you shouldn’t ignore changes in your nails. Black lines on a nail can have various causes, from normal color variation to ...