The primary reason for nails developing longitudinal ridges or splitting vertically is age, according to Mayo Clinic. These ridges that extend from the nail bed to the nail tip are generally harmless.Know More
Nails Magazine points out that longitudinal ridging, technically known as onychorrhexis, is often exacerbated by placing the hands in alcohol or water for long periods or by stress caused to the nails from typing or playing piano. Vertical splitting of the nails is an inconvenience, but it is not a health risk. However, it is sometimes associated with other skin conditions, including eczema and psoriasis.
There is some research to support taking biotin in order to strengthen brittle nails. Keeping nails regularly manicured diminishes the unattractive appearance of vertical splitting.Learn more in Human Anatomy
According to NHS Choices, blue fingernails are caused by low blood oxygen levels or poor circulation brought on by exposure to cold temperatures. This condition is called "peripheral cyanosis."Full Answer >
Humans have fingernails to protect sensitive skin on the fingers from cuts, burns and other damage. Nails on the fingers help people pick and pry, essentially serving as natural tools. They help with grooming by letting people brush off dirt and contaminants from skin and help people perform simple tasks like scraping off dog hairs from garments.Full Answer >
Vertical ridges observed on fingertips are predominately caused by growing older. The medical term onychorrhexis is used to describe long, tiny, raised lines that run up and down the length of the nail.Full Answer >
According to Dr. Standley, flat nails may indicate Raynaud's disease, a condition that most commonly affects women ages 18 through 30. Other changes in nail shape and appearance, such as spooning, pitting, thickening or thinning of the nail plate, white lines under the nail, ridges, yellow or bluish hue and wide nails, may also indicate a new or worsening health condition and require evaluation by a health professional.Full Answer >