TY - JOUR T1 - Lips do not lie JF - Archives of disease in childhood - Education & practice edition JO - Arch Dis Child Educ Pract Ed DO - 10.1136/archdischild-2021-321908 SP - edpract-2021-321908 AU - Rachel Haigh AU - Lauren Grahame AU - Pramodh Vallabhaneni Y1 - 2021/06/15 UR - http://ep.bmj.com/content/early/2021/06/15/archdischild-2021-321908.abstract N2 - A 14-year-old boy presented with an 18-month history of lower lip swelling (figures 1 and 2). There was no history of associated trauma or pain. Occasional episodes of runny stools with no presence of mucous or blood were described. There was no other history of swelling or pain. There was no early morning worsening of his lower lip swelling or breathing difficulties. No skin rashes or pruritus was reported. He had suffered from mouth ulcers and perianal abscesses requiring surgical intervention when he was 5 years old. Systemic and perianal examination was normal. Urine dipstick revealed no protein/haematuria.Figure 1 Lower lip swelling.Figure 2 Lower lip swelling.Question 1What is the most probable cause of this facial appearance?Oro-facial granulomatosis (OFG)/Crohn’s disease(CD)Hereditary angioedema (HA)MastocytosisOral allergy syndromeHypothyroidismQuestion 2What initial … ER -