There are many reasons why a person can develop dandruff. It might be due to yeast infection on the scalp, stress, nutritional deficiencies and improper use of hair products like dyes, gels, hair sprays, blower, hair iron and not shampooing regularly.
Many doctors believe that brittle nails is caused by nail dehydration. But a research made at Mt. Sinai School of Medicine had analyzed between weak and strong finger nails, they have found out that the water content for both are the same.
There are many reasons why people have cracked lips or at the side corner of their mouth.