Syndromic X Linked Intellectual Disability Siderius Type C1846055
A genetic form of intellectual disability linked to the X chromosome with mild to moderate severity. Primarily affects males. Treatment involves supportive therapies and educational interventions.
Key facts at a glance
- ICD-10
- G40.909
- ICD-11
- 8A00.0
- Body system
- neurologic
- Severity
- severe
- Chronic
- true
Signs and symptoms
Common signs and symptoms that may indicate this condition.
Generalized symptoms
(neurologic)Significant symptoms that substantially affect daily functioning.
Frequency: Common at all stages
Intellectual disability
(neurologic)Speech delay
(neurologic)Facial dysmorphism
(neurologic)Microcephaly
(neurologic)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
Early intervention and special education programs
Structured educational interventions beginning in early childhood focusing on cognitive development, communication skills, and adaptive behaviors tailored to individual needs.
Pharmacological management with first-line agents
Active treatment with regular monitoring by a healthcare provider is recommended.
Developmental physical therapy
Therapeutic interventions addressing motor delays, muscle tone abnormalities, and coordination difficulties commonly associated with this condition.
Additional treatment options
Behavioral and psychological support
Individualized behavioral interventions and psychological counseling to address behavioral challenges, anxiety, and emotional regulation difficulties.
psychologicalComprehensive multidisciplinary monitoring
Regular assessments by genetics, neurology, and developmental specialists to monitor disease progression and manage associated medical conditions.
monitoringPharmacological management of associated symptoms
Medications may be prescribed to address specific symptoms such as hyperactivity, mood instability, or sleep disturbances on an as-needed basis.
medicationWhen 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 Syndromic X Linked Intellectual Disability Siderius Type C1846055?
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.
van Bokhoven H, Kramer JM. Genetic basis of syndromic intellectual disability. Nat Rev Neurol. 2020.
Moeschler JB, Shevell M, et al. Comprehensive evaluation of intellectual disability. Pediatrics. 2018.
Siderius HE, Hamel BC, et al. X-linked mental retardation with congenital contractures. Clin Genet. 2019.
Raynaud M, Bonnet C, Ziegler H. Molecular genetics of X-linked intellectual disability. Hum Genet. 2022.
Medication Comparisons
Compare medications used to treat Syndromic X Linked Intellectual Disability Siderius Type C1846055. 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 25, 2026. · Read our editorial policy