Two varied presentations of cold urticaria

Sir, we report two cases of cold urticaria, who were confirmed on rechallenge. patient 1 a 20-year-old female presented with itching and wheals on the face and legs of 6 months duration. there was no history of development of similar lesions on other parts of the body. an extensive history taking revealed that patient developed lesions only while attending the air-conditioned classrooms or the centrally air-conditioned library. there was no history of atopy, angioedema, systemic symptoms or intake of any medicines. neither wheals nor any clinical abnormality were detected on clinical examination. the ice cube test performed on the patient was positive (figure 1).