Eggshell Nails
Are thin, white, and curved over the free edge. The condition is caused by improper diet, internal disease, medication, or nervous disorders. Be careful when manicuring these nails because they are fragile and break easily.

Hangnails
Is a common condition in which the cuticle around the nail splits.
Hangnails are caused by dry cuticles and skin. They are also aggravated by improper trimming.
This disorder can be solved by keeping the cuticles moisturized with oil and lotion. These can become infected and very painful.

Furrows
Also known as corrugations, are long ridges that run either lengthwise or across the nail. Some lengthwise ridges are normal in adults.
These ridges increase with age and can also be caused by psoriasis, poor circulation and frostbite. Ridges that run across the nail are caused by high fevers, pregnancy & measles.