DDX

Question 1

Angina Pectoris

Answer 1

Costochondritis
GERD
Peptic ulcer disease

WCS:
Myocardial Infarction

Question 2

Congestive Heart Failure

Answer 2

Left:
COPD
Emphysema
CAP

Right:
Cirrhosis
Nephrotic syndrome

WCS:
MI

Question 3

Deep Vein Thrombosis

Answer 3

Cellulitis
MSK injury
CHF

WCS:
Pulmonary embolism

Question 4

Hypertension

Answer 4

Renal Artery Stenosis
Diabetes
CVD

WCS:
Pheochromocytoma

Question 5

Myocardial Infarction

Answer 5

Angina
Costochondritis
Anxiety/panic attack

WCS:
Aortic dissection

Question 6

Acute Gastroenteritis

Answer 6

Appendicitis
Crohn’s disease
Gastritis

WCS:
Perforated duodenal ulcer

Question 7

Appendicitis

Answer 7

PID (F)
Diverticulitis
Crohn’s disease
Gastroenteritis

WCS:
Perforated duodenal ulcer

Question 8

Crohn’s

Answer 8

Gastroenteritis
Ulcerative colitis
Diverticulitis

WCS:
Intestinal carcinoid tumor

Question 9

Gastritis

Answer 9

Crohn’s disease
Cholecystitis
PUD

WCS:
Gastric cancer

Question 10

GERD

Answer 10

Gastritis
PUD
IBS

WCS:
Esophageal cancer

Question 11

IBS

Answer 11

Mesenteric ischemia
Gastroenteritis
Anxiety disorder

WCS:
Pancreatic cancer

Question 12

Pancreatitis

Answer 12

Mesenteric ischemia
Cholecystitis
Peptic ulcer disease

WCS:
Gastric cancer

Question 13

Peptic Ulcer Disease

Answer 13

Cholecystitis
Gastroenteritis
GERD

WCS:
Esophageal rupture

Question 14

Ulcerative Colitis

Answer 14

Crohn’s disease
Diverticulitis
Gastroenteritis

WCS:
Colon cancer

Question 15

Rheumatoid Arthritis

Answer 15

Fibromyalgia
Osteoarthritis
Lupus

WCS:
Paraneoplastic syndrome

Question 16

Allergic Rhinitis

Answer 16

Sinusitis
Nonallergic rhinitis
Granulomatous rhinitis

WCS:
CSF leak

Question 17

Asthma

Answer 17

URI
Bronchiectasis
GERD

WCS:
Pulmonary embolism

Question 18

Bronchitis

Answer 18

Acute/chronic sinusitis
Asthma
GERD
Pharyngitis

WCS:
COPD

Question 19

Emphysema

Answer 19

Bronchiectasis
Bronchitis
Chronic asthma

WCS:
CHF

Question 20

Influenza

Answer 20

URI
Pneumonia
Pulmonary edema

WCS:
Dengue infection

Question 21

Pneumonia

Answer 21

Bronchitis
Bronchiectasis
Pleurisy

WCS:
Cytomegalovirus

Question 22

Sinusitis

Answer 22

Allergic rhinitis
Influenza
Tension headache

WCS:
Sinonasal neoplasm

Question 23

Strep Throat

Answer 23

Mononucleosis
GERD
Allergic rhinitis w/ postnasal drip

WCS:
Diphtheria

Question 24

URI

Answer 24

Mononucleosis
Allergic rhinitis
Pneumonia (CAP)

WCS:
Tuberculosis

Question 25

Alcoholic Liver Disease (Cirrhosis)

Answer 25

Chronic pancreatitis Hep B Hep C

Question 26

Cholecystitis

Answer 26

Cholelithiasis Acute mesenteric ischemia Peptic ulcer disease WCS: Cholangiocarcinoma

Question 27

Cholelithiasis

Answer 27

Acute pancreatitis Cholecystitis Peptic Ulcer Disease WCS: Pancreatic cancer

Question 28

Meningitis

Answer 28

SA hemorrhage Brain abscess HSV encephalitis WCS: Brain tumor

Question 29

Tuberculosis

Answer 29

Lung abscess Histoplasmosis Aspergillosis WCS: NSCLC

Question 30

Migraines

Answer 30

Meningitis Tension headache Giant cell arteritis WCS: Aneurysm

Question 31

Osteoarthritis

Answer 31

Fibromyalgia Rheumatoid arthritis Psoriatic arthritis WCS: Septic arthritis

Question 32

Sciatica

Answer 32

Disk herniation Vertebral fracture Spinal stenosis WCS: Guillain-Barre syndrome

Question 33

Eczema/Atopic Dermatitis

Answer 33

Contact dermatitis Lichen simplex chronicus Plaque psoriasis ``` WCS: Mycosis fungoides (T-cell lymphoma) ```

Question 34

Psoriasis

Answer 34

Seborrheic dermatitis Lichen planus Contact dermatitis Atopic dermatitis WCS: Squamous cell carcinoma

Question 35

Contact Dermatitis

Answer 35

Drug eruption Seborrheic dermatitis Lichen simplex chronicus WCS: Erysipelas