A blister with clear watery contents that is not purulent (does not contain pus) and is not sanguineous (does not contain blood).
A blister is medically termed a vesicle. One that is more than 5 mm in diameter with thin walls and is full of watery fluid is called a bulla.
The word “blister” entered English in the 14th century. It came from the Middle Dutch “bluyster”, blister and was a modification of the Old French “blostre” which meant a leprous nodule — a rise in the skin due to leprosy.
- Water intoxication
A lowered blood concentration of sodium (see hyponatremia). The term “water intoxication” is generally used to refer to hyponatremia that occurs due to the consumption of excess water without adequate replacement of sodium, as may happen during strenuous exercise.
- Water on the brain
In infants the most obvious sign of hydrocephalus is usually an abnormally large head. (That is one reason a baby’s head should be measured at every well-baby visit). Symptoms of hydrocephalus in an infant may include vomiting, sleepiness, irritability, an inability to look upwards, and seizures. In older children and adults there is no head […]
- Water requirements, infant
failing to adequately dilute the concentrates with water causes the formulas to be too “hypertonic.” Hypertonic formulas can induce diarrhea and dehydration. In extreme cases, ingestion of overly hypertonic formulas can lead to kidney failure, gangrene of the legs, and coma. Therefore, parents should not adjust the amount of water that is added to concentrates […]
- Water retention
A nonspecific term meaning the accumulation of excess fluids in body tissues, medically known as edema. Edema can result from many different disease processes, including but not limited to diseases of the heart and circulation and kidney disease. Water retention is also used to describe the symptoms of feeling bloated or experiencing a small weight […]
- Waterborne bacterial disease
Vibrio cholerae, Campylobacter, Salmonella, Shigella and Escherichia coli (E. coli). Waterborne bacterial infections account for 2-3 billion episodes of diarrhea resulting in 1-2 million deaths a year. The deaths tend to be of infants and young children from dehydration, malnutrition, and other complications of waterborne bacterial infections. At high risk are the two billion people […]