Allergy & Immunology
Expert discussions on allergic conditions, immunodeficiencies, drug hypersensitivity, and immunotherapy approaches.
Recent Discussions
Can a patient with mastocytosis be prescribed SCIT?
Yes, patients with systemic mastocytosis (SM) can be prescribed aeroallergen subcutaneous immunotherapy (SCIT) with caution in a practice that has the experience and resources needed to treat severe anaphylaxis. SM patients are at risk of severe anaphylaxis reactions to SCIT during buildup and maint...
In a young patient who was vaccinated to chickenpox as a child (no previous varicella infection) should the patient receive a shingles vaccine prior to starting Rinvoq?
Yes. The vaccines are different and current vaccine is to prevent zoster for patients who have been previously exposed to varicella or vaccinated for varicella.
Do you read contact patch tests on removal at 48 hours, and do those results matter if negative at 72 or 96 hours?
Great question, and one that comes up frequently in clinical practice. I remove patches at 48 hours, and at that point I do perform a quick read or, at a minimum, have the tested areas thoroughly photographed. While it is difficult to draw firm conclusions from a 48-hour read alone, it is genuinely ...
How soon after stopping oral steroids can patch testing be performed?
Dose strength and duration of oral steroid therapy should factor into the equation. I would say at least 2 weeks to be on the less cautious side and up to 1 month if there is no urgency to patch test.
Is maternal asthma control associated with the baby developing atopic disease?
Maternal asthma control during pregnancy is associated with risk for childhood atopic disease, in particular atopic dermatitis (AD) and asthma. A longitudinal study of 100+ maternal-child dyads was studied for 5 years (2009-2014) using electronic health record (EHR) data. Children of mothers with a ...
For patients with chronic spontaneous urticaria who remain symptomatic despite maximally dosed second-generation H1 antihistamines, do you notice any meaningful difference in symptom response with add-on montelukast versus famotidine?
So, I am not impressed with the addition of H2 blockers, and the guidelines support my lack of enthusiasm. As for montelukast, a couple of articles suggest benefit, and it may be worth a 3-week trial, but if there is no benefit in a month, I would drop it off. There are a couple of manuscripts sugge...
What is your approach to diagnosing insulin allergy in patients with diabetes?
Insulin allergy, though uncommon since the advent of recombinant human insulin (estimated prevalence ~2%), remains a serious clinical concern. It can manifest as type I (IgE-mediated), type III (immune complex-mediated), or type IV (T-cell-mediated) hypersensitivity, ranging from local cutaneous rea...
Can autoimmune thyroiditis present with recurrent angioedema and bronchospasm?
There is an association between angioedema and autoimmune thyroid disease, although the incidence is not known. Activated CD4+ T lymphocytes, monocytes, and eosinophils. The incidence of thyroid autoimmunity in chronic urticaria is similar to the background population, but there is a cluster of angi...
What factors do you weigh most heavily when deciding on the duration of treatment with dupilumab in a patient with atopic dermatitis who is responding well and tolerating therapy?
If the atopic dermatitis was severe and longstanding, I would continue dupilumab indefinitely. If the patient wanted to cut back, they could try gradually spreading out the doses until the disease recurred.
How do you approach selection of systemic treatment in a patient with atopic dermatitis with severe itch?
The good news is we have 6 approved options here, 4 biologics and 2 small molecules, and all of these therapies have excellent itch data. Selecting a systemic therapy needs to take other comorbid conditions, medications, delivery preference (pill or injection), lifestyle, and other patient attribute...