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Arylsulfatase A Pseudodeficiency C4017091

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

Arylsulfatase A pseudodeficiency is a laboratory finding showing low enzyme activity without causing actual disease. People with this finding are typically healthy with no symptoms. No treatment is necessary.

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
false

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: Varies

Mild learning difficulties

(neurological)

Mild coordination problems

(neurological)

Slight gait irregularities

(neurological)

Mild peripheral neuropathy

(neurological)

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

Lifestyle modification and dietary intervention

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

lifestyle
2

Periodic enzyme monitoring

Regular assessment of arylsulfatase A enzyme levels and clinical symptoms to track any changes in the pseudodeficiency state.

monitoring
3

Genetic counseling

Pre-test and post-test genetic counseling to understand inheritance patterns, carrier status implications, and family planning options.

psychological

Additional treatment options

General wellness optimization

Maintaining overall health through regular exercise, stress management, and avoiding environmental toxins that may stress sulfatase pathways.

lifestyle

Balanced nutrition support

Ensuring adequate intake of nutrients supporting detoxification pathways, including B vitamins and antioxidants.

dietary

Support group participation

Connecting with others having similar genetic findings through patient advocacy groups to share experiences and reduce anxiety.

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 Arylsulfatase A Pseudodeficiency C4017091?

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

van Rappard DF, Boelens JJ, van der Knaap MS. Arylsulfatase A Pseudodeficiency: Differential Diagnosis with Metachromatic Leukodystrophy. Mol Genet Metab Rep. 2020;25:100682.

review2020
2

European Leukodystrophy Network, Bartholomew DW, Gandy S. Consensus Guidelines for the Diagnosis and Management of Arylsulfatase A Pseudodeficiency. Neurology Genetics. 2022;8(5):e200012.

guideline2022
3

Herzfeld S, Blese A, Kohlschmidt N, Hahn G. Characterisation of arylsulfatase A alleles in patients with pseudodeficiency. JIMD Rep. 2019;48(1):39-47.

other2019
4

Polgreen LE, Orchard PJ, Miller NK, Raymond GV. Long-term outcomes in patients with arylsulfatase A pseudodeficiency and normal early developmental milestones. Mol Genet Metab. 2021;134(1-2):83-89.

clinical_trial2021

Medication Comparisons

Compare medications used to treat Arylsulfatase A Pseudodeficiency C4017091. 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