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.Know More
Raynaud's disease causes some areas of the body to feel numb or cold during cool weather or stressful situations, says Mayo Clinic. The affected areas usually include fingers, toes, nose and ears, but this disease may affect other areas as well, such as the nipples and lips. The condition occurs when small arteries become narrow thus limiting the amount of blood supplied to certain areas.
This disease is more common in people who live in cooler climates. Symptoms include cold fingers and toes, numb or prickly feelings in the affected areas, and changes in skin color says Mayo Clinic. The symptoms appear in waves and can last for mere minutes or several hours. While the condition is not dangerous and normally does not require medical intervention, it can be annoying. Any signs of infection or sores merit investigation as well.Learn more about Human Anatomy
Fingernails bend easily if they are weakened by environmental damage, poor nutrition or illnesses. Healthy fingernails are supposed to be strong and firm and should not bend or break easily. A person with weak fingernails has a number of factors to consider in order to determine the exact cause.Full Answer >
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 >
Fingernails grow from the root of the nail, pushing old cells out which flatten and harden, as new cells take their place. The flattened and hardened nail then slides along the nail bed, which is fed with minuscule blood vessels.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 >