The stone may develop usually because of the super-concentrated urine. The other cause that can form the stone is the output of a given chemical waste products are increased. For instance, the calcium stones may occur when there is too much supplement of the calcium and urine is full of calcium. This also depends on the capacity of absorbing the calcium from the intestines. Some people may have overactive parathyroid glands called as hyperparathyroidism which results in calcium being leached out of the bones and getting collected in the urine.
The other chemical compounds that can form the calculi include uric acid and the cystine, an amino acid. The calcium gets combined with either phosphate or oxalate. Any type of obstruction to the flow of the urine can also increase the chances for stone formation. Kidney stones associated with infections are known as “infectious stones”.
The age group which is affected the most begins after 40 year and continues up to 70 year. The person with one stone is likely to develop more stones.
There are many conditions which can lead to kidney stones like in the Gouty conditions, the uric acid level is increased and then it forms the uric acid stones. Kidney diseases like renal tubular acidosis and some inherited metabolic conditions like hyperoxaluria and cystinuria can also form stones in the kidney. Person having inflammatory bowel diseases or one who has undergone intestinal bypass are more susceptible to develop calculi.
Certain medications like some calcium containing antacids, drugs to treat HIV infections and some diuretics are likely to give raise the chances of development of the kidney stones or calculi.