 This pilot study seeks to recruit two groups of adult subjects ages 19 and up: 1 Control allergy group: subjects with physician-diagnosed allergic rhinitis, and 2 Subjects with physician-diagnosed chronic urticaria andor angioedema. Subjects in the 2 groups will answer a questionnaire to collect information regarding demographics, vitamin D supplementation, previous diagnostic tests, current medications, and also a validated Dermatology Life Quality Index attached. Other information will be obtained as available from the medical record: weight, height, body mass index BMI, thyroid stimulating hormone TSH, free thyroxine T4, thyroid autoantibodies, urticaria autoimmune testing autologous serum skin test, CD203c results, anti-nuclear antibody ANA and allergy skin prick testing. These stated tests are drawn for the evaluation of subjects with CUA. All subjects will have blood draw for 25OHD levels, and the levels will be compared between the 2 groups. It has been previously reported that approximately 15-30 of healthy populations are deficient in Vitamin D. There is no intervention component. Subjects will receive the 25OHD results, but no further follow-up is planned. 