Nephritis refers to an inflammation of the kidneys. It is a serious condition and may be either acute or chronic. A synonym for nephritis is Bright’s disease, for Bright (1789 -1858) described examples of many different disease which can be included under the term.
This disease most often strikes in childhood or adolescence. It can become progressively worse and result in death, if not treated properly in the initial stages. In the alternative, it may subside into a chronic stage where the patient gets better but not well.
Symptoms
The main symptoms of acute nephritis are a pain in the kidneys, extending down to the ureters, fever, dull pain in the back and scanty and highly coloured urine. Often the urine, may contain blood, albumin and casts consisting of clumps of red and white cells which come from the damaged kidneys. The patient suffers from puf- finess in the face and swelling of the feet and ankles.
In the chronic stage of nephritis, which may drag on for many years, the patient passes large amounts of albumin in the urine. Later, there may be a rise in the blood pressure and the patient may develop uraemia. There may be frequent urination, especially during night.
Causes
Nephritis usually follows some streptococcus infection of the throat or an attack of scarlet fever or rheumatic fever. The underlying causes of nephritis are the same for diseases of the kidneys in general, namely wrong food habits, excessive drinking, suppressive medical treatment of some former diseases, the habitual use of chemical agents of all kinds for the treatment of indigestion and other stomach disorders and frequent use of aspirin and other painkillers.
Nutritional deficiencies can also lead to nephritis. The disease has been produced in many species of animals by diets deficient in the B vitamin choline. Animals lacking in essential fatty acids and magnesium also develop nephritis. When vitaminB6 and magnesium are under supplied, the kidneys are further damaged by sharp crystals of oxalic acid combined with calcium. Nephritis also occurs if vitamin E is deficient.