Coeliac Disease Flashcards
Coeliac occurs at what age?
Any age, but mainly infancy and old age
What are the genes involved in coeliac?
HLA-DQ2 (95%)
DQ8
What is the pathophysiology of coeliac?
CD8+ mediated response to gliadin in gluten
What is the pneumonic for the presentation of Coeliac?
GLIAD
GI malabsorption Lymphoma and Carcinoma Immune associations (IgA deficiency) Anaemia Dermatological (dermatitis herpetiformis + aphthous ulcers)
With what symptoms should you always suspect Coeliac? (3)
diarrhoea, weight loss, anaemia
What can malabsorption of carbs cause? (4)
Nausea, diarrhoea, vomiting
Abdo distension + colic
Flatus
Weight loss
What can malabsorption of fats cause? (2)
Steatorrhoea
Hyperoxaluria -> renal stones
What can malabsorption of protein cause?
Protein-losing enteropathy if severe
What can malabsorption of folate and iron cause?
iron-deficiency anaemia
What can malabsorption of Vit D and Ca cause?
Bone pain
Osteoporosis
What can malabsorption of Vit K cause?
petechiae
increased INR
What can malabsorption of Vitamin B2 (riboflavin) cause?
angular stomatitis
What can malabsorption of Vitamin B1 and B6 cause?
polyneuropathy
What are dermatitis herpetiformis?
Occur in 20% of coeliacs
Symmetrical, itchy vesicles on extensor surfaces, esp elbows
Biopsy = granular deposition of IgA
What would you expect to see on LFT’s in coeliac disease?
decreased albumin
What blood tests would you perform for coeliac? (6)
FBC, LFT, INR, Vit D and bone, red cell folate, serum B12
What immunological tests would you run for a suspected coeliac?
(ie what autoantibodies would you test for?) (4)
Anti-endomysial (95% specificity)
Anti-tissue transglutaminase
Anti-reticulin
Anti-gliadin
What procedure would you perform to diagnose coeliac?
OGD + duodenal biopsy
What will a biopsy show in coeliac?
subtotal villous atrophy
crypt hyperplasia
intra-epithelial lymphocytes
Which of these foods should be avoided in coeliac? Barley Rye Rice Oats Wheat Maize Soya
Barley
Rye
Oats
Wheat
Rice, Maize and Soya are fine
Rx for coeliac?
Gluten free diet
Dapsone for dermatitis herpetiformis