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A urinary tract infection (also referred to as a UTI) is a bacterial infection affecting the urinary tract. When bacteria from the rectal area enter the urinary tract via the urethra to the bladder and multiply in the urine, an infection occurs.

Senility is defined as the weakness or mental infirmity of old age, and is associated with the deterioration of the body and mind. It is commonly referred to as dementia.

The human urinary system removes waste products known as urea from the blood. Proteins found in meat, poultry, and vegetables are broken down in the body into urea, which is then eliminated from the body via the urine.

Raynaud's disease is a circulatory condition that affects blood supply to the skin and peripheries and causes the extremities of the body to lose feeling and become numb.

When a fear severely impairs a person’s ability to function properly, they would be diagnosed as having a phobia. A phobia is characterized by an irrational fear of a specific object or situation that interferes with an individual’s ability to function.

A once care-free child can all of a sudden become very attached and increasingly more upset at the notion of being left at daycare or with the babysitter. This is an important developmental stage where babies suddenly become wary of strangers and both concerned and anxious when familiar people leave the room or house.

A virus is a tiny organism that causes an infection in the body. Viruses are made up of the genetic material known as DNA or RNA, which the virus uses to replicate. In order for a virus to survive, it must invade and attach itself to a living cell. It will then multiply and produce more virus particles.

Women are more prone to yeast infections, and three out of four women are affected during their lifetime by vaginal yeast infections. Men also may also develop a yeast infection, but it is less common. It is not primarily a sexually transmitted condition, but the infection can be transmitted between partners.

When the weather is sunny and bright people tend to feel more upbeat and positive. When the weather is gloomy, cold and dismal, moods tend to slump and often people feel a little down. However, for certain individuals these mood shifts develop into a type of depression that accompanies seasonal changes and affects their ability to function normally.

Bronchitis is an inflammation of the bronchi (large airways) in the lungs, occurring when an infection causes the thin mucous membrane linings of these airways to become irritated and inflamed. The result is the production of mucus in the lungs and a persistent cough that may last several days or weeks.