Vitamin deficiency disorder
MONDO:0024298A disorder that is caused by the deficiency of a vitamin. The deficiency may result from either suboptimal vitamin intake or conditions that prevent the vitamin's use or absorption in the body. Representative examples include beriberi caused by thiamine deficiency, scurvy caused by vitamin C deficiency, and rickets caused by vitamin D deficiency.
Also known as: avitaminosis, vitamin deficiency, vitamin deficiency disorder, Avitaminoses, deficiencies, vitamin, deficiency, vitamin, vitamin deficiencies
146 clinical trials for this condition and its sub-types, 9 tagged with Vitamin deficiency disorder itself.
Follow this condition to get notified about new trialsWhere it sits in the disease tree
Browse by category →Sub-types of Vitamin deficiency disorder
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Vitamin D deficiency 89 trials
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Vitamin B deficiency 0 trials · 17 incl. sub-types
3 sub-types
- Vitamin B12 deficiency 12 trials · 15 incl. sub-types Sub-types →
- Beriberi 2 trials Sub-types →
- Pyridoxine deficiency anemia 0 trials
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Scurvy 13 trials
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Vitamin A deficiency 9 trials
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Inborn vitamin metabolic disorder 0 trials · 7 incl. sub-types
5 sub-types
- Disorders of vitamin D metabolism 0 trials · 3 incl. sub-types Sub-types →
- Inborn disorder of cobalamin metabolism and transport 1 trial · 3 incl. sub-types Sub-types →
- Cerebral folate deficiency 1 trial
- Familial isolated deficiency of vitamin E 1 trial
- Neurodegenerative syndrome due to cerebral folate transport deficiency 1 trial
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Nutritional biotin deficiency 0 trials
Most studied deeper sub-types
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New vitamin d pill aims to tame parathyroid glands in dialysis patients
Disease control Stopped earlyThis phase 2 study tested a weekly extended-release capsule of calcifediol (CTAP101) in 44 adults with chronic kidney disease on hemodialysis who also had vitamin D insufficiency and secondary hyperparathyroidism. The goal was to see if the drug could raise vitamin D levels and l…
Phase 2 • Sponsor: OPKO Health, Inc. • Aim: Disease control
Last updated Jun 27, 2026 12:03 UTC
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Could a vitamin d boost make flu shots work better for seniors?
Prevention Stopped earlyThis trial tests whether giving older adults a high dose of vitamin D before their flu shot can strengthen their immune response. Participants are 65 or older with low vitamin D levels. The study measures changes in infection-fighting proteins and antibody levels after vaccinatio…
Phase 2 • Sponsor: University Hospital, Clermont-Ferrand • Aim: Prevention
Last updated Aug 08, 2026 00:03 UTC