Trichothiodystrophy 6 Nonphotosensitive C4310785
A rare genetic disorder causing brittle, sulfur-deficient hair and potentially affecting skin, nails, and neurological development. Management focuses on supportive care addressing specific symptoms.
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
Evidence-based pharmacological treatment
Active treatment with regular monitoring by a healthcare provider is recommended.
Keratin Precursor Enhancement Diet
Dietary modifications emphasizing amino acid intake (particularly cysteine) and micronutrients supporting keratin synthesis such as biotin, inositol, and trace minerals. Consultation with a metabolic nutritionist recommended.
Moisturizing Scalp Treatments
Application of medical-grade emollients and conditioning agents to the scalp to improve hydration and reduce brittleness of remaining hair. May include topical applications with ceramides or squalane.
Additional treatment options
Postural and Movement Therapy
Therapeutic exercises addressing hypotonus and movement difficulties associated with trichothiodystrophy. Focus on core strengthening, posture correction, and adaptive techniques for daily activities.
physical_therapyFamily-Centered Counseling
Psychosocial support addressing the chronic nature of trichothiodystrophy, family stress, and sibling adjustment issues. May include group therapy connecting families with similar experiences.
psychologicalNeurological Function Assessment
Regular neurological examinations monitoring for progressive neurological complications including seizures, ataxia, or peripheral neuropathy that may occur 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 6 Nonphotosensitive C4310785?
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.
Faghri F, Tamura D, Kraemer KH. Trichothiodystrophy: A systematic review of clinical features and genetic aspects. Br J Dermatol. 2020.
Moslehi R, Stefanini M, Botta E, Nardo T. Clinical management of nucleotide excision repair disorders: Guidelines from the International Trichothiodystrophy Group. J Invest Dermatol. 2022.
Kelley MR, Brooks BP, Kleman D, Neuhaus S. Genotype-phenotype correlations in non-photosensitive trichothiodystrophy: A prospective cohort study. Nat Genet. 2019.
Lara-Corrales I, Mellerio JE, Martinez AE. Brittle hair syndromes: Clinical and molecular update. Pediatr Dermatol. 2021.
Medication Comparisons
Compare medications used to treat Trichothiodystrophy 6 Nonphotosensitive C4310785. 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