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Severe T Cell Immunodeficiency C4025208

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

A severe weakness in infection-fighting immune cells, leaving patients highly vulnerable to serious infections. Treatment includes infection prevention and possible bone marrow transplant.

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

Key facts at a glance

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

Signs and symptoms

Common signs and symptoms that may indicate this condition.

Warning signs - seek immediate care

!

Recurrent sinopulmonary infections

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Autoimmune cytopenias

Generalized symptoms

(immunologic)

Significant symptoms that substantially affect daily functioning.

Frequency: Common at all stages

Persistent oral candidiasis

(integumentary)

Severe warts

(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

Combination drug regimen with regular assessment

Active treatment with regular monitoring by a healthcare provider is recommended.

medication

When 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.

Q

What is Severe T Cell Immunodeficiency C4025208?

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

Cunningham-Rundles C, Sathya B. Severe Combined Immunodeficiency: Pathogenesis and Management. Immunol Allergy Clin North Am. 2020.

review2020
2

Notarangelo LD, Fischer A, Geha RS, et al. International Consensus Document on Primary Immunodeficiency Disorders: Guidelines for Management of Severe T Cell Deficiencies. J Clin Immunol. 2022.

guideline2022
3

Haddad E, Hoenig M, Albert MH, et al. Hematopoietic Stem Cell Transplantation for Severe T Cell Immunodeficiency: Long-Term Outcomes from Fourteen International Centers. Blood. 2021.

clinical_trial2021
4

Dvorak CC, Cowan MJ, Logan BR, et al. A Systematic Review and Meta-Analysis of Gene Therapy for Primary Immune Deficiencies: Outcomes and Complications. Biol Blood Marrow Transplant. 2023.

meta_analysis2023

Medication Comparisons

Compare medications used to treat Severe T Cell Immunodeficiency C4025208. 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