After repeated exposure, which type of chemical will cause an allergic reaction?

After repeated exposure, which type of chemical will cause an allergic reaction?

• A. Irritants
• B. Corrosives
• C. Sensitizers/allergens
• D. Acute toxins

Answer: (C)

Sensitizers/allergens are chemicals that can trigger an allergic reaction after prior exposure. The immune system becomes sensitized to the substance, so when you encounter it again it can provoke a reaction, even from smaller amounts. This is different from irritants, which simply irritate tissues without an immune allergy, corrosives that cause tissue damage, or acute toxins that produce immediate toxic effects. Reactions to sensitizers often don’t appear right away and may develop after repeated contact, which is why they’re the ones that cause allergies after ongoing exposure.

Sensitizers/allergens are chemicals that can trigger an allergic reaction after prior exposure. The immune system becomes sensitized to the substance, so when you encounter it again it can provoke a reaction, even from smaller amounts. This is different from irritants, which simply irritate tissues without an immune allergy, corrosives that cause tissue damage, or acute toxins that produce immediate toxic effects. Reactions to sensitizers often don’t appear right away and may develop after repeated contact, which is why they’re the ones that cause allergies after ongoing exposure.