Experiences with IVIG Infusions
A 55-year-old male diagnosed with specific antibody deficiency, long COVID, and reactivated EBV has recently begun treatment with intravenous immunoglobulin (IVIg). The regimen consists of 400 mg per kilogram (equivalent to 30 grams) administered every four weeks. He has completed two infusions thus far. Following each session, he experiences feelings of fatigue and generally mild side effects. However, issues seem to arise approximately six days post-infusion. After the initial treatment, he noted a slight burning sensation in his arms and hands, accompanied by a pins-and-needles feeling, flu-like symptoms, and muscle weakness in his legs. To mitigate potential side effects, he incorporated Claritin into his regimen for the second infusion. Around six days after this second infusion, the return of flu-like symptoms coincided with a buzzing sensation throughout his arms and legs, increased muscular weakness, and persistent brain fog. He has made it a point to communicate these developments to his healthcare supervisor. Despite the ongoing treatment, he expresses concern regarding the possibility that his condition may be deteriorating. Information and discussions he has encountered suggest that exacerbating symptoms can be a temporary phase, and he is advised to endure it. Nevertheless, he is seeking professional insight on his experiences to better understand his situation.
Answers (1)

4/23/2025, 2:40:39 PM
OpenHealth AI
It sounds like you’re going through a challenging time with your IVIG infusions, and it’s completely understandable to feel concerned about your symptoms and overall condition. Let’s break this down to help address your experiences and provide some guidance.
Main Points:
- Post-Infusion Side Effects: It's common to experience fatigue and mild side effects after IVIG infusions.
- Timing of Symptoms: The symptoms you describe—burning sensations, flu-like symptoms, muscle weakness, and brain fog—occurring around six days post-infusion may indicate a typical reaction to the immunoglobulin or related to your underlying condition.
- Communication with Your Healthcare Team: It's crucial to keep your healthcare provider updated about these symptoms, as they can help tailor your treatment and manage side effects.
Explanation:
IVIG is a treatment that can help manage immune deficiencies, but it can also lead to side effects as your body adjusts to the therapy. The symptoms you are experiencing could be related to the infusions or the underlying health conditions you have, such as long COVID or EBV reactivation. The six-day delay in symptoms is notable and can be frustrating, but many patients report fluctuations in their condition, particularly when adjusting to new treatments.
Next Steps:
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Track Your Symptoms: Keep a detailed diary of when symptoms occur in relation to your infusions, noting the severity and type of symptoms. This can help your healthcare provider understand patterns and make informed adjustments to your management plan.
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Manage Side Effects:
- Hydration: Staying well-hydrated can help reduce fatigue and support overall health.
- Rest: Prioritize rest, especially as your body adjusts to treatment. Consider gentle activities if they feel manageable.
- Symptom Medication: Continue using Claritin or other supportive medications as recommended by your healthcare team to help alleviate specific side effects.
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Regular Communication: Continue to share any new or persistent symptoms with your healthcare supervisor. If symptoms worsen, ask about possible adjustments to your infusion regimen or the addition of supportive therapies.
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Seek Support: Engage with support groups or forums where others with similar conditions share their experiences. It can be beneficial to realize you’re not alone in this journey.
Remember, while it’s important to endure some changes as part of treatment, your health and quality of life are paramount. If you feel that your symptoms are significantly impacting your daily life, don't hesitate to voice this during your follow-up appointments. You deserve a comprehensive approach to your treatment that prioritizes both your immune health and your overall well-being.
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