A leg cramp is an involuntary contraction or spasm of a muscle in the leg or foot.  Cramps most commonly occur at night, when the limbs are cool, particularly after the day of unusual exertion, and more frequently in the elderly, the young, and persons with arteriosclerosis.  These cramps seem to be caused by unnatural [...]

Nails are composed almost entirely of protein. Abnormal or unhealthy nails may be the result of a local injury, a glandular deficiency such as hypothyroidism, or a deficiency of certain nutrients.
A protein deficiency can cause opaque white bands to appear on the nails or cause them to become dry, brittle, and very thin. [...]

Sinusitis is the inflammation of one or more of the sinus cavities, or passages. Sinusitis usually occurs in the nasal sinuses, which are located in the bones surrounding the eyes and nose. Symptoms of the inflammation include nasal congestion and discharge, fatigue, headache, earache, pain around the eyes, mild fever and an increased [...]