57 citations,
August 1997 in “Pediatrics International” VDDR I and II are genetic disorders affecting vitamin D use, causing rickets, with VDDR I treatable by vitamin D supplements and VDDR II needing high doses and calcium.
50 citations,
October 1986 in “European journal of pediatrics” A boy with severe Vitamin D-resistant rickets did not respond to treatment and lacked a common symptom, suggesting a need for alternative treatments.
6 citations,
August 1989 in “European journal of pediatrics” Child with rickets improved with a specific vitamin D therapy, but alopecia did not change.
13 citations,
April 1994 in “Baillière's clinical endocrinology and metabolism” Some people have genetic mutations that make them resistant to vitamin D, leading to rickets even with enough vitamin D intake.
5 citations,
January 1970 in “Journal of Nepal Paediatric Society” Hair loss can be a key sign of a rare type of rickets when vitamin D treatment doesn't work and advanced tests aren't available.