Problem with my fingernail

I have had an issue with only one of my fingernails and it has me a little worried.  The fingernail has started to peel on the side and started to curve on me.  Any help or thoughts how to treat/cure it would be very helpful.

[Dr_Aparna]

Hi,
This could be due to an infection of the nail caused by fungi, bacteria or parasites. As you age, the nails become brittle, develop ridges and separation of the nail layers at the end of the nail. If this is the case then avoid cleaning solutions, and don't soak the nails in water for too long as it will worsen the condition.

There are many species of fungi that can affect nails.
One of them is caused by yeast called Candida.  It is more common in fingernails and may be the most common cause of fungal fingernails. Candida can cause yellow, brown, white, or thickened nails.

Creams and other topical medications are usually not effective against nail fungus. This is because nails are too hard for external applications to penetrate. However, a new medicated nail lacquer ciclopirox (Penlac) topical solution 8% has been approved to treat finger or toenail fungus.

Oral antifungal therapy (like Griseofulvin  or  Terbinafine) works about 50%-75% of the time. It can take nine to 12 months to see if it has worked or not, because that is how long it takes for the nail to grow out. Even when therapy works the fungus may come back about 20%-50% of the time.

ref:http://www.medicinenet.com/fungal_nails/page3.htm