sensitization of skin

例句：

1. 1. The patient developed a rash after exposure to the pollen.
   病人在接触花粉后出现了皮疹。
2. 2. The doctor advised the patient to avoid contact with the allergens.
   医生建议病人避免接触过敏原。
3. 3. The patient's sensitivity to certain drugs led to an exacerbation of symptoms.
   病人对某些药物的敏感性导致症状恶化。