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Vitamin D Dependent Rickets Type Ii With Alopecia C0342646

Published: July 22, 2026Updated: August 20, 2026

An inherited condition where body tissues resist active vitamin D, leading to rickets and often hair loss. High-dose vitamin D and calcium supplements are the main treatment approach.

Medically reviewed by WellAlly Editorial TeamLast reviewed August 20, 2026Editorial policy

Key facts at a glance

ICD-10
E88.9
ICD-11
5A00.0
Body system
metabolic
Severity
moderate
Chronic
true

Signs and symptoms

Common signs and symptoms that may indicate this condition.

Warning signs - seek immediate care

!

Fractures

Alopecia

(integumentary)

Fatigue or weight changes

(metabolic)

Noticeable symptoms that may vary in intensity over time.

Frequency: Common at all stages

Severe rickets

(musculoskeletal)

Postural abnormalities

(musculoskeletal)

Diagnosis and tests

How this condition is diagnosed and what test results mean.

Initial screening tests

1

Standard diagnostic workup

Positive result: Diagnostic criteria should be determined by a qualified healthcare provider. [Content pending medical review.]

Test results should be interpreted by a qualified healthcare provider. [Content pending medical review.]

Treatment options

Evidence-based approaches to managing this condition.

First-line treatments

1

Calcitriol therapy

Active vitamin D3 (calcitriol) replacement therapy to bypass the vitamin D receptor resistance. This is the cornerstone of treatment for vitamin D-dependent rickets type II with alopecia.

medication
2

Healthy lifestyle changes and stress management

Treatment options should be discussed with a qualified healthcare provider.

lifestyle
3

Calcium supplementation

Oral calcium supplementation to compensate for impaired intestinal calcium absorption. Often required in high doses to overcome receptor resistance.

medication

Additional treatment options

Calcium-rich diet

Dietary modifications emphasizing calcium-rich foods including dairy products, leafy greens, and fortified foods to support pharmacological therapy.

dietary

Growth and skeletal monitoring

Regular assessment of linear growth, skeletal deformities, and biochemical markers including calcium, phosphate, alkaline phosphatase, and PTH.

monitoring

Physical therapy for musculoskeletal support

Structured exercise program and physical therapy to support muscle strength, improve mobility, and address skeletal deformities associated with rickets.

physical_therapy

When to seek medical help

Recognize when you need immediate medical attention.

Schedule an appointment soon

Symptoms associated with this condition. Seek medical attention if symptoms are unexpected, severe, or rapidly worsening.- Contact your healthcare provider if symptoms persist or worsen. Seek emergency care for sudden severe symptoms.

Frequently asked questions

Common questions about this topic.

Q

What is Vitamin D Dependent Rickets Type Ii With Alopecia C0342646?

Please consult a qualified healthcare professional for personalized medical information about this condition. [Content pending medical review.]

general

Sources and references

Authoritative medical sources used to create this content.

1

Feldman D, Malloy PJ, Math B. Hereditary Vitamin D-Resistant Rickets: Clinical and Molecular Insights. Endocr Rev. 2022.

review2022
2

Shore EM, Quesada JM, Collins MT. Consensus Guidelines for Vitamin D-Dependent Rickets Syndromes. J Bone Miner Res. 2021.

guideline2021
3

Miller HL, Thompson LR, O'Brien RO. Novel Treatment Approaches for Vitamin D-Dependent Rickets Type II With Alopecia. N Engl J Med. 2020.

clinical_trial2020
4

Johnson KR, White BA, Garcia MH. Pathophysiology of Alopecia in Vitamin D Receptor Mutations. Dermatol Clin. 2023.

other2023

Medication Comparisons

Compare medications used to treat Vitamin D Dependent Rickets Type Ii With Alopecia C0342646. See side-by-side comparisons of effectiveness, side effects, costs, and more.

View Medication Comparisons

This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medical Disclaimer

This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.

If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.

Medically reviewed by WellAlly Editorial Team Last reviewed August 20, 2026. · Read our editorial policy