Skin prick tests (SPT) for suspected allergens
A qualified health professional performed this test after ensuring that facilities for resuscitation were available if the need arose. Oral antihistamines and topical skin corticosteroids were stopped for the required duration prior to testing. Skin prick testing with the commercial allergens (Immunotek, Spain) or prick-to-prick testing were carried out according to the guidelines set by the European Academy of Allergy and Clinical Immunology by Muraro et al., 2014 [16]. A positive and a negative control were included in all instances. The size of the wheal was recorded at 15 minutes and a test was considered positive if the wheal size is >3mm of the negative control.