A member asked:

Diag psoriatic arthritis, chronic renal stones since age 14, osteoporosis, low vit d, pthand serum ca nor. comb seem rare. any idea why ca loss?

2 doctors weighed in across 2 answers

Hypocalcemia: It could be multifactorial but it might be a component of the kidney disease (forming renal stones) that causes some minor scarring or damage to the renal tissue and you are unable to reabsorb the calcium as it traverses the kidney tubules.

Answered 2/13/2013

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Dr. Thomas Namey answered

Specializes in Rheumatology

Related!: Psoriatic arthritis stems from low grade bowel inflammation, and you get resportion of oxalate, which forms calcium oxalate stones, which i sure is what you had. The low vitamin d will decrease calcium absorption until your parathyroid gland is ratched and takes cacium out of bones, which causes osteoporosis. Hope you are taking high dose d3.

Answered 12/9/2013

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