Sensitization typically occurs in two phases: induction and elicitation. During the induction phase, an individual's immune system is first exposed to the allergen. This exposure may not cause any visible reaction but primes the immune system to respond more aggressively upon subsequent encounters. In the elicitation phase, re-exposure to the same allergen triggers a rapid and severe immune response. This can manifest as skin rashes, respiratory distress, or other allergic symptoms.
