Hematemesis
Coffee-ground emesis
Vomiting + retching followed by hematemesis is more likely Mallory-Weiss (esophageal)
Dark, tarry stools
Syncope or pre-syncope
Dyspepsia, epigastric pain or heartburn
Coffee-ground emesis
Tachycardia, hypotension
Liver disease
Spider angiomata, palmar erythema, jaundice, gynecomastia
Coagulopathy
Petechiae/purpura
Melena
Spider angiomata, palmar erythema, jaundice, gynecomastia
Petechiae/purpura
Esophageal varices
Peptic ulcer disease 
Mallory-Weiss tear
Gastritis/esophagitis
Esophageal candidiasis
Gastric/esophageal varices
Achalasia
Esophagitis