Trichothiodystrophy 5 Nonphotosensitive C4225420
A non-photosensitive TTD causing brittle hair, growth deficiency, and neurological problems. This variant does not involve photosensitivity. Management requires multidisciplinary care focusing on developmental support and addressing associated health concerns.
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
Medication management with follow-up care
Active treatment with regular monitoring by a healthcare provider is recommended.
Nutritional Optimization Program
Individualized nutrition plan addressing specific deficiencies commonly seen in trichothiodystrophy, including supplementation with zinc, selenium, and essential fatty acids to support hair and systemic health.
Scalp and Hair Protection Protocol
Implementation of protective measures including silk pillowcases, gentle detangling tools, and humidity control in living environments to reduce mechanical stress on brittle hair.
Additional treatment options
Motor Skills Development Therapy
Structured physical therapy program focusing on balance, coordination, and strength training to address motor delays. Includes gait training and functional exercise progression.
physical_therapyNeurodevelopmental Support Services
Early intervention services providing cognitive stimulation, social skills training, and behavioral support tailored to developmental level. Family education integral to maximizing functional independence.
psychologicalEndocrine and Growth Surveillance
Periodic evaluation of growth hormone status, thyroid function, and pubertal development given the association with short stature and endocrine abnormalities in trichothiodystrophy.
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 5 Nonphotosensitive C4225420?
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.
Liang C, Morris A. Trichothiodystrophy: Clinical Features, Genetics, and Management Strategies. J Invest Dermatol. 2021.
Zhang H, Patel S, Kim J. Clinical Practice Guidelines for Inherited Hair and Nail Disorders. Br J Dermatol. 2022.
Chen R, Anderson W, Lopez M, Davis K. Natural History and Genotype-Phenotype Correlations in Non-Photosensitive Trichothiodystrophy: A Multi-Center Cohort Study. Orphanet J Rare Dis. 2020.
Thompson D, Garcia R, White P. Molecular Mechanisms in Trichothiodystrophy: A Systematic Review and Meta-Analysis. Hum Mol Genet. 2019.
Medication Comparisons
Compare medications used to treat Trichothiodystrophy 5 Nonphotosensitive C4225420. 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