chronic hypocalcaemia

Last reviewed 01/2018

Commonly:

• vitamin D deficiency - dietary lack, malabsorption, lack of sunlight
• chronic renal disease - due to failure of renal conversion of 25 HCC to 1,25 DHCC

Less commonly:

• hypoparathyroidism - including hypomagnesaemia
• pseudohypoparathyroidism
• low plasma albumin - malnutrition, liver disease

Rarely:

• dietary lack:
• low intake
• binding of calcium by organic phosphates - for example, presence of phytate in chapati flour may be important in Asian people