The article “A rare case of lactation-associated anaphylaxis” by James P. Senter and Kris G. McGrath describes an exceptionally uncommon condition in which breastfeeding or milk let-down triggers episodes of anaphylaxis in the postpartum period.
Key points from the medical literature on lactation anaphylaxis include:
- Symptoms can include:
- urticaria (hives)
- itching
- wheezing or shortness of breath
- throat tightness
- hypotension
- gastrointestinal symptoms
- Reactions typically occur shortly after breastfeeding or milk expression.
- The condition is believed to be related to rapid postpartum hormonal changes leading to mast-cell degranulation and histamine release rather than a classic food allergy.
- Diagnosis is clinical and often delayed because the condition is extremely rare.
- Elevated serum tryptase during episodes may help confirm true anaphylaxis.
- Management may include:
- epinephrine for acute episodes
- antihistamines
- corticosteroids
- avoidance or suppression of lactation in severe recurrent cases (sometimes with bromocriptine).
The syndrome itself has only been reported in a very small number of cases worldwide.
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