Causes

• Skin, sun exposure
• Liver, Liver diseases, !Liver Failure
• Kidney, CKD
• GI, Mal-absorption
• (active form) Low PTH Serum, Issue with PTH supply

Treatment

Vitamin D Supplement

• For Low PTH Serum, Issue with PTH supply :
  • Calcitriol (1,25 VD)
• Other wise, regular VD