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Type I Complement Component 8 Deficiency C3151081

Published: July 22, 2026Updated: August 20, 2026

An immune system disorder where the body lacks a protein needed to fight infections. Patients are prone to repeated bacterial infections and may require preventive antibiotics.

Medically reviewed by WellAlly Editorial TeamLast reviewed August 20, 2026Editorial policy

Key facts at a glance

ICD-10
D89.9
ICD-11
3A00.0
Body system
immunologic
Severity
moderate
Chronic
true

Signs and symptoms

Common signs and symptoms that may indicate this condition.

Generalized symptoms

(immunologic)

Noticeable symptoms that may vary in intensity over time.

Frequency: Common at all stages

Recurrent respiratory tract infections

(immunologic)

Febrile episodes

(immunologic)

Autoimmune manifestations

(immunologic)

Recurrent skin abscesses

(integumentary)

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

Antibiotic prophylaxis

Regular prophylactic antibiotics to prevent recurrent bacterial infections, which are common in patients with complement component-8 deficiency due to impaired immune defense.

medication
2

Exercise prescription and weight management

Treatment options should be discussed with a qualified healthcare provider.

lifestyle
3

Infection surveillance program

Regular clinical monitoring and laboratory assessment for early detection of infections, including periodic complete blood counts and inflammatory markers.

monitoring

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 Type I Complement Component 8 Deficiency C3151081?

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

Sullivan KE, et al. Practice parameter for the diagnosis and management of primary immunodeficiency: Complement deficiencies. J Clin Immunol. 2022.

guideline2022
2

Grumach AS, Kirschfink M. Complement deficiencies: Updates on the membrane attack complex and alternative pathway. Immunol Invest. 2021.

review2021
3

Ramade F, et al. Molecular characterization and treatment outcomes in patients with complement component 8 deficiency: A prospective cohort study. Blood. 2020.

clinical_trial2020
4

Wagner E, Janeway C. Infections in complement-deficient patients. In: Rich RR, et al., eds. Clinical Immunology, 5th ed. Elsevier; 2019.

other2019

Medication Comparisons

Compare medications used to treat Type I Complement Component 8 Deficiency C3151081. 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 20, 2026. · Read our editorial policy