A 21-year-old patient complains of an itchy rash that appeared in the morning. The rash consisted of small blisters that disappeared after a few hours, leaving spots. According to the patient's history, the day before she was staying for a long time outdoors, among flowering plants. Objectively, her general condition is satisfactory, erythematous spots with infiltration can be visualized in the area of her forehead, eyes, upper and lower limbs. What is the most likely diagnosis in this case?