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Sialidosis Type 1 C0023806

Published: July 22, 2026Updated: August 25, 2026

A rare inherited metabolic disorder causing vision problems and involuntary movements. Management focuses on symptom relief and supportive care.

Medically reviewed by WellAlly Editorial TeamLast reviewed August 25, 2026Editorial policy

Key facts at a glance

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

Signs and symptoms

Common signs and symptoms that may indicate this condition.

Fatigue or weight changes

(metabolic)

Mild symptoms that may not significantly impact daily life.

Frequency: Common at all stages

Myoclonus

(metabolic)

Cherry-red macula

(metabolic)

Visual disturbances

(metabolic)

Mild ataxia

(metabolic)

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

Anticonvulsant Therapy for Myoclonus

Pharmacological management using anticonvulsant medications such as clonazepam or valproic acid to control myoclonic seizures, which are a primary symptom affecting quality of life in sialidosis type 1.

medication
2

Dietary counseling and physical activity plan

Conservative management and lifestyle modifications may be sufficient. Monitor symptoms.

lifestyle
3

Physical Therapy Program

Targeted exercises and gait training to maintain motor function, improve balance, and address ataxia symptoms. Focuses on safety awareness and fall prevention strategies.

physical_therapy

Additional treatment options

Ophthalmologic Surveillance

Regular eye examinations to monitor cherry-red spot progression and visual function. Early detection of complications allows for timely intervention and support services.

monitoring

Neuropsychological Support

Cognitive and emotional support services to address developmental concerns, self-esteem issues, and adjustment to living with a rare progressive condition.

psychological

Occupational Therapy

Adaptive strategies and assistive devices to maintain independence in daily activities, addressing fine motor difficulties and fatigue management.

complementary

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 Sialidosis Type 1 C0023806?

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

Bonten EJ, d'Azzo A. Lysosomal neuraminidase deficiency: sialidosis type I and type II. Orphanet J Rare Dis. 2020.

review2020
2

Mancini GM, Seyrantepe V, Roubergue A, et al. Clinical management guidelines for neuraminidase deficiency (sialidosis). J Inherit Metab Dis. 2022.

guideline2022
3

Patterson MC, Simpson S, Gahl WA. Enzyme replacement therapy in sialidosis: a multi-center observational study. Mol Genet Metab. 2021.

clinical_trial2021
4

Seyrantepe V, Ozdemir MH, Metin K. Molecular genetics of sialidosis: systematic review and meta-analysis. Hum Genet. 2023.

meta_analysis2023

Medication Comparisons

Compare medications used to treat Sialidosis Type 1 C0023806. 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 25, 2026. · Read our editorial policy