Trichothiodystrophy 7 Nonphotosensitive C5231403
A genetic condition with fragile hair due to low sulfur content, sometimes involving skin problems and developmental concerns. Treatment is supportive and tailored to each patient's needs.
Key facts at a glance
- ICD-10
- Q84.9
- ICD-11
- LA00.0
- Body system
- dermatologic
- Severity
- severe
- Chronic
- true
Signs and symptoms
Common signs and symptoms that may indicate this condition.
Generalized symptoms
(dermatologic)Significant symptoms that substantially affect daily functioning.
Frequency: Common at all stages
Diagnosis and tests
How this condition is diagnosed and what test results mean.
Initial screening tests
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
Environmental Modification for Safety
Home and environmental adaptations to accommodate neurodevelopmental challenges, including fall prevention measures, simplified daily routines, and assistive devices as needed.
Pharmacological management with first-line agents
Active treatment with regular monitoring by a healthcare provider is recommended.
Comprehensive Nutritional Support
Structured nutritional intervention ensuring adequate intake of macronutrients, vitamins A/D/E, and minerals critical for integumentary and neurological health. Enteral nutrition considered if oral intake insufficient.
Additional treatment options
Dermatological Evaluation and Hair Analysis
Specialist dermatology referral for polarized light microscopy analysis of hair shafts, scalp biopsy if indicated, and ongoing assessment of integumentary manifestations.
procedureDevelopmental and Educational Intervention
Individualized education plan development with specialized instruction, classroom accommodations, and learning support addressing intellectual disability associated with trichothiodystrophy.
psychologicalOphthalmologic and Audiologic Surveillance
Regular eye examinations and hearing assessments given potential associations with ocular and auditory complications. Early detection enables timely intervention and support services.
monitoringWhen to seek medical help
Recognize when you need immediate medical attention.
See a doctor within 24 hours
Moderate to severe symptoms that may indicate worsening of this condition. Prompt medical evaluation is recommended.
Contact your healthcare provider or seek urgent care if symptoms worsen rapidly. Go to the emergency department for life-threatening symptoms.
Frequently asked questions
Common questions about this topic.
What is Trichothiodystrophy 7 Nonphotosensitive C5231403?
Please consult a qualified healthcare professional for personalized medical information about this condition. [Content pending medical review.]
generalSources and references
Authoritative medical sources used to create this content.
Hashimoto S, Nakajima K. Clinical management guidelines for trichothiodystrophy and related DNA repair disorders. J Clin Dermatol. 2022.
Fok KC, Wang LH, Garcia-Dominguez M. Non-photosensitive trichothiodystrophy: clinical features, genetic basis, and diagnostic approaches. Orphanet J Rare Dis. 2021.
Bootsma D, Cleaver JE. Long-term outcomes in non-photosensitive trichothiodystrophy: a multi-center cohort study. Genet Med Open. 2020.
Stefanini M, Lehmann AR, Sarasin A. Update on the molecular basis of trichothiodystrophy and its variant forms. Hum Mutat. 2019.
Medication Comparisons
Compare medications used to treat Trichothiodystrophy 7 Nonphotosensitive C5231403. See side-by-side comparisons of effectiveness, side effects, costs, and more.
View Medication ComparisonsThis information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
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