Atopy (COMPLETE × ANTHOLOGY)

: These cells produce cytokines (IL-4, IL-13) that trigger B cells to differentiate into plasma cells producing allergen-specific IgE.

Atopy is a genetic predisposition toward developing exaggerated IgE-mediated immune responses to common environmental allergens. Clinically, it manifests as a triad of conditions—, allergic rhinitis (hay fever) , and allergic asthma —often appearing sequentially in a pattern known as the "atopic march". 1. Pathophysiology and Mechanism : These cells produce cytokines (IL-4, IL-13) that

The core of atopy is a Type I hypersensitivity reaction driven by a Type 2 immune response. : Sensitization through inflamed skin can lead to

: Antigen-presenting cells perceive allergens (like pollen or dust mites) as danger signals, activating TH2 or ILC2 cells. caused by skin barrier defects (e.g.

: Sensitization through inflamed skin can lead to early-onset food allergies.

While there is currently no cure, management focuses on controlling inflammation and restoring barrier function. Atopy - StatPearls - NCBI Bookshelf - NIH

: Often the first sign in infancy, caused by skin barrier defects (e.g., filaggrin mutations) that allow for epicutaneous allergen sensitization.