Ewan and Clark’s helpful commentary provokes further comment on the diagnosis of allergy and the management of the allergic child.¹ The issues raised are controversial because differences in clinical practice exist between countries, between allergy centres in the UK, and between allergists and general paediatricians. Unavailability of skin prick testing outside allergy centres accounts for some of the differences, but neither SPT or RAST distinguish between sensitisation and clinical allergy; scepticism …