Here are some conditions associated with the nails showing certain diseases such as quoted by WebMD, Wednesday (23/11/2011), among others:
1. Pale nails
Very pale-colored nails can sometimes be a sign of serious illness, such as:
b. Congestive heart failure
c. Liver disease
3. Yellow nail
One of the most common causes of yellow nails is a fungal infection. If the infection worsens, the nail can be removed, the nails may thicken and crumble. In rare cases, yellow nails can indicate more serious conditions such as severe thyroid disease, lung disease, diabetes or psoriasis.
4. Bluish-colored fingernails
Nails with a bluish tint can mean the body is not getting enough oxygen. These conditions may indicate an infection in the lungs, like pneumonia. Some heart problems can also be associated with a blue nail.
6. Nails cracking
Nails dry and brittle, and often cracked or split has been associated with thyroid disease. Splitting of nail with a more yellowish color might be due to fungal infection.
7. Swollen skin around nail
If the skin around nail appears red and swollen, can be recognized as an inflammation of the nail fold. These conditions may be the result of lupus or connective tissue disorders. Infection can also cause redness and inflammation of the nail fold.
8. Dark line under the nails
Dark lines beneath the nail should be investigated as soon as possible. These conditions are sometimes caused by melanoma, the most dangerous type of skin cancer.
9. Biting nails
Biting your nails may not be more out of habit, but in some cases it can be a sign of persistent anxiety because of medication. Biting nails also have been associated with obsessive compulsive disorder. If you can not stop, you should consult with a physician.
Although nail changes may reflect a variety of health conditions, but changes are rarely the first sign. While most of the nail abnormalities are harmless. Not everyone with white nails has hepatitis means. If you are concerned with changes in your nails, then it can consult with a dermatologist.