A coma is a state of prolonged unconsciousness that can be caused by a wide variety of problems ? traumatic head injury, stroke, brain tumor, or even an underlying illness, such as diabetes or an infection. A coma is a medical emergency. Swift action is needed to preserve life and brain function. Comas seldom last longer than a few weeks. People who are unconscious for longer than that are usually reclassified as being in a persistent vegetative state. People who are in a persistent vegetative state for more than a year are extremely unlikely to awaken.

The adenoids are lumpy clusters of spongy lymphoid tissue that help protect kids from getting sick. They sit high on each side of the throat behind the nose and the roof of the mouth above and behind the uvula. Like tonsils, adenoids help keep our body healthy by trapping harmful bacteria and viruses that we breathe in or swallow. Adenoids also contain cells that make antibodies to help our body fight infections. Adenoids do important work as infection fighters for babies and little kids and become less important once a kid gets older and the body develops other ways to fight germs, adenoids usually shrink after about age 5, and by the teenage years they often practically disappear.

HAF Deficiency or Hageman Factor Deficiency is a rare genetic blood disorder that leads to prolonged clotting or coagulation of blood without the presence of prolonged clinical bleeding tendencies. It is also known as factor XII deficiency. Previously it was thought that factor XII is needed for blood clotting and when it is deficient, other blood clotting factors will compensate for its absence. Factor XII is also known as Hageman factor which is a plasma Glycoprotein.

Rheumatoid Arthritis is a disease of body joints. It is an autoimmune disorder which causes inflammation of lining surfaces of the body joints resulting in pain, swelling, stiffness and altered functional capability of that joint. It involves small joints first. Rheumatoid Arthritis can affect the tissues around the joint and even it can affect the other organs of the body. As this disease can affect the other organs of the body so it is sometimes referred to as Rheumatoid Disease.

A sealant is a plastic material that is usually applied to the chewing surfaces of the back teeth premolars and molars. This plastic resin bonds into the depressions and grooves (pits and fissures) of the chewing surfaces of back teeth. The sealant acts as a barrier, protecting enamel from plaque and acids.