Originally Posted by onesassygma
My left big toenail splits vertically down the middle. It starts splitting when it reaches the tip of my toe and continues no matter what I do. I've tried clipping it as short as I can hoping that as it grows it will not split again. I've tried letting it grow and it just continues to grow in a split. I'm beginning to really worry because nothing seems to stop it. Does anyone know what is causing this and how I can stop it. I've tried keeping polish on and all it does is split the polish too. I'm afraid it will soon begin to split all the way down through the rest of the nail bed. Help!
First I have to tell you how the nail plate is attached to the nail bed and how it grows forward before I can tell you why tis is happening - it wouldn't make sense otherwise.
The surface of the nail bed is made up of a series of raised 'rails' that run vertically from the cuticle to the free edge. These 'rails' are very much like the rails of a train track. On the underside of the nail plate is a series of vertical grooves, much like the wheels of a train. The nail plate rides forward on the 'rails' much like a train rides its tracks.
Sometimes, for unknown reasons, one of the rails on the nail bed will begin to get bigger and start to grow upwards through the nail plate. As this is happening, the nail plate will grow thinner over that rail and will split as it becomes free edge. As the disorder continues, the rail will completely grow through the nail plate separating it into two completely separate portions. From what I understan, there is nothing that can be done to stop it or to correct it.
Sorry I didn't have any 'good' news for you.