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PubMed This is a summary of 11 peer-reviewed journal articles Updated
Neurology · Autoinflammation and PLCG2-Associated Antibody Deficiency and Immune Dysregulation

Monitoring Your Health and Recognizing Emergencies

At a Glance

People with APLAID need an individualized monitoring and emergency plan because the condition can affect the brain, blood vessels, lungs, eyes, skin, and gut. Seizures, breathing trouble, sudden neurologic changes, severe eye symptoms, or rapidly worsening ulcers require urgent medical care.

Because APLAID is a multisystem condition, staying ahead of potential complications is the most important part of long-term care. While many symptoms are manageable at home, certain “red flags” require immediate medical attention to prevent serious injury. Monitoring is intended to identify complications early and help you and your care team respond promptly [1][2].

Neurologic and Vascular Vigilance

Recent medical reports have highlighted that APLAID can affect the blood vessels and the brain [2]. While these complications are reported only in a small number of patients and are not expected in everyone, they are significant enough to warrant individualized monitoring.

  • Vascular Abnormalities: Some patients with APLAID have vascular tortuosity (twisted or curvy blood vessels) or narrowed arteries [2]. There have also been reports of aortic-root dilation (a widening of the main artery leaving the heart) and pulmonary-vein stenosis (narrowing of the veins that carry blood from the lungs to the heart) [2].
  • Neurologic Risks: Seizures and cerebral ischemia (a lack of blood flow to parts of the brain) have been reported, sometimes in very young children [3][2]. These can be caused by inflammation in the brain’s blood vessels (vasculitis) or the unique shape of the vessels themselves [3].

Urgent Red Flags: When to Seek Emergency Care

If you or your child experiences any of the following, call local emergency services immediately rather than contacting a specialist first. Inform the staff that the patient has a rare genetic autoinflammatory disease called APLAID and provide a medication list.

  1. Neurologic Emergencies: Any first-time seizure, a seizure that lasts longer than five minutes (unless your individualized plan says otherwise), sudden weakness on one side of the body, difficulty speaking, or a severe, “thunderclap” headache [2][3].
  2. Respiratory Distress: Sudden shortness of breath, rapid breathing (tachypnea), or a blue tint to the lips or fingernails, which could indicate a lung flare or a serious infection [2][4].
  3. Severe Eye Symptoms: New, intense eye pain, extreme sensitivity to light, or a sudden change in vision. This could signal uveitis (internal eye inflammation) that needs immediate treatment to protect eyesight [5][6].
  4. Ulcerative Skin Changes: A skin rash that rapidly turns into deep, open, or “dead-looking” (necrotic) ulcers, especially if accompanied by a high fever [7][8].

Fever and Infection Action Plan

The most common difficult decision in APLAID is determining if fever or respiratory symptoms represent a flare or an infection. You cannot reliably distinguish flare from infection at home. Patients must have a clinician-approved fever, respiratory-symptom, and worsening-rash plan. Know whom to call, whether there is a specific temperature threshold, and what samples or cultures may be needed.

Recommended Routine Screenings

To manage APLAID over a lifetime, doctors recommend a proactive schedule of screenings based on the patient’s specific phenotype and expert-center recommendations. There is no clearly established universal schedule for this ultra-rare condition; imaging frequency and modality should be individualized.

  • Neurology & Imaging: The relevant specialty may consider a baseline MRI and MRA of the brain to check the structure of the blood vessels if symptoms or risk factors warrant [2]. Regular neurologic exams should be part of check-ups.
  • Ophthalmology: A slit-lamp eye exam may be recommended periodically to screen for uveitis or conjunctivitis [5][6].
  • Cardiology & Pulmonology: Depending on clinical need, echocardiograms (heart ultrasounds) or other modalities may be used to monitor the aorta and pulmonary veins [2]. Lung health may be tracked through pulmonary function tests (PFTs) or occasionally chest CT scans to watch for interstitial pneumonitis [5][9].
  • Gastrointestinal Check-ups: If there is persistent abdominal pain or diarrhea, monitoring for colitis or IBD-like symptoms is necessary [10][11].

By maintaining this schedule, you and your care team can focus on keeping the body as healthy as possible while watching for any signs that your treatment plan might need to be adjusted [1].

Common questions in this guide

Which APLAID symptoms mean I should call emergency services?
Call local emergency services for a first seizure, a seizure lasting more than five minutes unless your individualized plan says otherwise, sudden one-sided weakness, trouble speaking, or a severe sudden headache. Sudden breathing difficulty, rapid breathing, blue lips or fingernails, severe eye pain or vision changes, or a rapidly deepening skin ulcer with high fever also require emergency assessment. Tell emergency staff that the patient has APLAID and bring the medication list if possible.
Can I tell whether an APLAID fever is a flare or an infection at home?
No. Fever and respiratory symptoms can look like either an APLAID flare or an infection, and they cannot be reliably distinguished at home. Ask your clinician for a written plan covering whom to call, temperature thresholds, breathing changes, and whether cultures or other samples are needed.
What routine tests may be used to monitor APLAID?
The schedule depends on the patient’s symptoms, risks, and recommendations from an expert center. Depending on clinical need, monitoring may include neurologic exams, brain MRI and MRA, slit-lamp eye exams, echocardiograms, pulmonary function tests, chest CT, or gastrointestinal evaluation for ongoing abdominal pain and diarrhea. There is no single universal screening schedule for everyone with APLAID.
Why might someone with APLAID need a brain MRI and MRA?
APLAID has been associated in some patients with unusual or narrowed blood vessels and reduced blood flow to the brain. MRI shows brain structures, while MRA helps assess blood vessels. A neurologist or other specialist decides whether baseline or repeat imaging is appropriate based on symptoms and individual risk.
How are eye problems monitored in APLAID?
An ophthalmologist may use a slit-lamp examination to look for uveitis or conjunctivitis, sometimes even when there is no eye pain. The timing depends on the patient’s history and care team’s recommendations. New intense eye pain, marked light sensitivity, or sudden vision changes should be treated as an emergency.
How can families prepare for an APLAID emergency?
Keep an up-to-date medication list and a brief summary stating that the patient has APLAID and any important emergency instructions. Know which symptoms require calling local emergency services, who to contact for fever or respiratory symptoms, and which hospital is best prepared to care for the patient.
What respiratory changes are urgent in APLAID?
Sudden shortness of breath, rapid breathing, or blue lips or fingernails can signal a lung flare or serious infection and require immediate emergency care. Tell emergency staff about APLAID and the patient’s medications. Ongoing changes in exercise tolerance or repeated respiratory infections should be discussed with the care team even if they are not sudden.

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References

References (11)
  1. 1

    Overlap of familial Mediterranean fever and APLAID treated with anakinra: a case-based review.

    Akoglu G, Yaz I, Esenboga S, et al.

    Clinical rheumatology 2025; (44(12)):5143-5154 doi:10.1007/s10067-025-07760-x.

    PMID: 41114771
  2. 2

    Neurological manifestations and vasculopathy in PLCG2-associated antibody deficiency and immune dysregulation (APLAID): a case series.

    Asna Ashari K, MacRae R, Hoytema van Konijnenburg DP, et al.

    Pediatric rheumatology online journal 2026; (24(1)).

    PMID: 42902271
  3. 3

    Expanding the clinical features of autoinflammation and phospholipase Cγ2-associated antibody deficiency and immune dysregulation by description of a novel patient.

    Morán-Villaseñor E, Saez-de-Ocariz M, Torrelo A, et al.

    Journal of the European Academy of Dermatology and Venereology : JEADV 2019; (33(12)):2334-2339 doi:10.1111/jdv.15918.

    PMID: 31465591
  4. 4

    Severe Autoinflammatory Manifestations and Antibody Deficiency Due to Novel Hypermorphic PLCG2 Mutations.

    Martín-Nalda A, Fortuny C, Rey L, et al.

    Journal of clinical immunology 2020; (40(7)):987-1000 doi:10.1007/s10875-020-00794-7.

    PMID: 32671674
  5. 5

    Novel PLCG2 Mutation in a Patient With APLAID and Cutis Laxa.

    Neves JF, Doffinger R, Barcena-Morales G, et al.

    Frontiers in immunology 2018; (9()):2863 doi:10.3389/fimmu.2018.02863.

    PMID: 30619256
  6. 6

    Ocular involvement in monogenic autoinflammatory disease.

    Maccora I, Marrani E, Mastrolia MV, et al.

    Autoimmunity reviews 2021; (20(11)):102944 doi:10.1016/j.autrev.2021.102944.

    PMID: 34509650
  7. 7

    Case Report: A Rare Case of Autoinflammatory Phospholipase Cγ2 (PLCγ2)-Associated Antibody Deficiency and Immune Dysregulation Complicated With Gangrenous Pyoderma and Literature Review.

    Wu N, Zhang B, Wang T, et al.

    Frontiers in immunology 2021; (12()):667430 doi:10.3389/fimmu.2021.667430.

    PMID: 34093563
  8. 8

    Severe epidermolysis bullosa/Kindler syndrome-like phenotype of an autoinflammatory syndrome in a child.

    Mahajan R, Bishnoi A, Manjunath S, et al.

    Clinical and experimental dermatology 2021; (46(4)):795-799 doi:10.1111/ced.14557.

    PMID: 33625737
  9. 9

    Early-onset bibasilar emphysema in a patient with PLCG2-related immune dysregulation.

    Sundlof A, Nathan J, Gerhard GS, Salerno D

    Respiratory medicine case reports 2025; (58()):102308 doi:10.1016/j.rmcr.2025.102308.

    PMID: 41537131
  10. 10

    Characterization of a Novel Pathogenic PLCG2 Variant Leading to APLAID Syndrome Responsive to a TNF Inhibitor.

    Yang Z, Tao P, Han X, et al.

    Arthritis & rheumatology (Hoboken, N.J.) 2024; (76(11)):1670-1678 doi:10.1002/art.42948.

    PMID: 38965708
  11. 11

    Clinical and immunological features of an APLAID patient caused by a novel mutation in PLCG2.

    Peng Q, Luo D, Yang Y, et al.

    Frontiers in immunology 2023; (14()):1014150 doi:10.3389/fimmu.2023.1014150.

    PMID: 36776842

This page about monitoring APLAID is for informational purposes only and does not constitute medical advice. Work with your specialist team on an individualized screening and emergency plan, and seek emergency care for urgent warning signs.

Guide contents Autoinflammation-PLCG2-associated antibody deficiency-immune dysregulation
Research & Literature
04 Treating and Managing APLAID