Abnormal Circulating Properdin Concentration C4531218
A condition where properdin protein levels are abnormal, affecting the immune system's ability to fight certain bacterial infections. It can increase susceptibility to serious infections. Treatment involves infection prevention and management.
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.
Warning signs - seek immediate care
Petechial skin rash
Small red or purple spots on the skin caused by bleeding under the skin, typically appearing on extremities and indicating meningococcal infection.
This is a medical emergency. Seek immediate emergency care if a petechial rash appears with fever.
Neck stiffness
Inability to flex the neck forward due to meningeal irritation, indicating meningitis secondary to infection.
Seek immediate emergency care if neck stiffness occurs with fever, as this may indicate life-threatening meningitis.
Recurrent fever
(constitutional)Episodes of high fever occurring repeatedly due to increased susceptibility to bacterial infections, particularly Neisseria species.
Frequency: 80-90% of patients
Severe headache
(neurologic)Intense, persistent headache often associated with meningococcal meningitis or septicemia in affected individuals.
Frequency: 50-60% of patients
Fatigue and malaise
(constitutional)Persistent feeling of tiredness, weakness, and general discomfort resulting from recurrent infections.
Frequency: 50-60% of patients
Nausea and vomiting
(gastrointestinal)Feeling of sickness with stomach contents coming up, often accompanying severe infection or meningitis.
Frequency: 30-40% of patients
Photophobia
(neurologic)Sensitivity to light causing discomfort or pain when exposed to bright lights, associated with meningitis.
Frequency: 15-25% of patients
Joint pain and arthritis
(musculoskeletal)Pain and inflammation in one or more joints, sometimes occurring as a complication of systemic infection.
Frequency: 10-20% of patients
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
Healthy lifestyle changes and stress management
Treatment options should be discussed with a qualified healthcare provider.
Immunological Function Surveillance
Regular assessment of immune system function including complement pathway analysis and infection frequency tracking to evaluate properdin-related status.
Infection Prevention Protocol
Enhanced hygiene practices, vaccination updates, and avoidance strategies for communicable diseases given potential immune vulnerability.
Additional treatment options
Immunomodulatory Therapy
Pharmaceutical interventions to support or modulate immune function when appropriate, based on individual assessment and severity of abnormalities.
medicationImmune-Supportive Nutrition
Dietary approach emphasizing nutrients that support immune function including adequate protein, vitamins C and D, zinc, and antioxidant-rich foods.
dietaryComplementary Immune Support
Evidence-informed complementary approaches such as certain botanical preparations that may support overall immune system balance.
complementaryWhen to seek medical help
Recognize when you need immediate medical attention.
Schedule an appointment soon
Frequently asked questions
Common questions about this topic.
What is Abnormal Circulating Properdin Concentration C4531218?
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.
European Society for Immunodeficiencies. ESID Diagnostic Criteria for Primary Immunodeficiency. 2023.
Ricklin D, Lambris JD. Complement in immune and inflammatory disorders: pathophysiological mechanisms. J Immunol. 2023;210(5):659-668.
National Institute of Allergy and Infectious Diseases. Primary Immune Deficiency Diseases: Guidelines for Diagnosis and Management. Clin Immunol. 2020;218:108520.
Miller EC, Wang Y, Sethi S, et al. Properdin deficiency and meningococcal infection: a systematic review. J Infect. 2019;79(5):407-419.
Janeway's Immunobiology. 9th ed. Garland Science; 2022.
International Union of Immunological Societies. IUIS Classification of Immunodeficiencies. J Clin Immunol. 2022;42(5):1050-1084.
Gulley JL, Lau RJ, Garlanda R, et al. The complement system in health and disease: mechanisms and therapeutic potential. Nat Rev Immunol. 2023;23(12):773-789.
Cappellari A, Bianchi E, Lougaris V, et al. Clinical manifestations and genetic characterization of patients with properdin deficiency. J Clin Immunol. 2021;41(5):1092-1104.
Wahrheit J, Haerynck F, Gennery AR, et al. European consensus on diagnosis and treatment of rare complement deficiencies. J Clin Immunol. 2020;40(8):1105-1118.
Pappworth IY, Lougaris V, Quinti I, et al. Infections in patients with complement deficiencies: a systematic review and meta-analysis. Clin Immunol. 2019;208:21-29.
Medication Comparisons
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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 26, 2026. · Read our editorial policy