Why does anaphylaxis typically worsen with repeated exposure to the same allergen, rather than remaining constant?

💡 Explanation

Anaphylaxis worsens due to increased IgE sensitization of mast cells because initial exposure primes the immune system to produce IgE antibodies specific to the allergen. Therefore, subsequent exposures trigger a more rapid and amplified mast cell degranulation and histamine release, rather than a constant or diminished response due to tolerance or exhaustion.

• What distinguishes proteasomal degradation from chaperone-mediated autophagy in intracellular protein clearance?
• Why does chronic psoriasis lead to weakened skin integrity and increased risk of secondary infections, despite increased keratinocyte proliferation?
• Why does impaired neural signal transmission often persist following a concussion, even after macroscopic brain imaging appears normal?
• A patient's cancer cells exhibit uncontrolled growth despite intact DNA repair mechanisms. Which mechanism explains why these cells bypass apoptosis despite their growth factor receptor mutations?
• In an arm wrestling match, which risk increases significantly when opponents' arm angle acutely exceeds a safe limit?
• Why does chronic kidney disease increase skin infection risk?