not one person told me any causes for bloody vomit LOL
Fair enough! Following is the differential diagnosis of hematemesis, or as you say, the causes for bloody vomit.
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Trauma Causes
o Benign mucosal tear/esophagus
o Esophageal trauma
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Electromagnetic, Physics, trauma, Radiation Causes
o Esophageal burn
o Esophageal radiation
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Iatrogenic, Self Induced Disorders
o Nasogastric suction
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Surgical, Procedure Complication
o Gastroscopy complication/effect
o Ulcer, anastomotic/stomal/post surgery
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Infectious Disorders (Specific Agent)
o Leptospirosis/severe (Weils) type
o Ebola virus disease
o Yellow fever
o Aspergillosis
o Esophageal candidiasis
o Intestinal anthrax
o African hemorrhagic (Marburg) virus disease
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Infected organ, Abscesses
o Stomach abscess
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Neoplastic Disorders
o Leukemia, acute
o Zollinger-Ellison syndrome/gastrinoma
o Adenocarcinoma, gastric
o Carcinoma, esophageal
o Esophageal tumor
o Gastric adenoma (polyp)
o Stomach leiomyosarcoma
o Stomach, carcinoma, scirrhous
o Stomach lymphosarcoma
o Stomach, leiomyoma
o Gastrontestinal Stromal/Mesenchymal Tumor (GIST)
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Allergic, Collagen, Auto-Immune Disorders
o Duodenal Crohn's disease
o Esophageal Crohn's disease
o Milk protein allergy/diarrhea
o Watermelon stomach/GAVE Scleroderma
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Congenital, Developmental Disorders
o Arteriovenous malformations
o Generalized essential telangiectasia
o Intestinal telangiectasia
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Hereditary, Familial, Genetic Disorders
o Telangiectasia,hereditary hemorrhagic
o Hereditary coagulopathies
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Relational, Mental, Psychiatric Disorders
o Bulimia and purging/eating disorder
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Anatomic, Foreign Body, Structural Disorders
o Gastrointestinal bleeding
o Gastric ulcer
o Penetrating duodenal ulcer
o Peptic ulcer hemorrhage
o Pulmonary hemorrhage/bleeding
o Stomach, perforation
o Upper GI bleeding
o Channel pyloric ulcer
o Epistaxis/nose bleed
o Esophageal ulceration
o Varices, esophageal
o Fistula, Aorticoduodenal (Aorticoenteric)
o Mallory Weiss syndrome(esophageal tear)
o Gastric varices
o Dieulafoy's Ulcer Lesion
o Hemosuccus Pancreatitis
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Arteriosclerotic, Vascular, Venous Disorders
o Gastric infarct
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Functional, Physiologic Variant Disorders
o Malingering
o Vomiting
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Vegetative, Autonomic, Endocrine Disorders
o Esophageal free reflux/GERD syndrome
o Gastric retention, acute
o Cushing/gastric stress ulcer
o Portal hypertension
o Hypergastrinemia
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Reference to Organ System
o Gastritis, acute
o Duodenal ulcer
o Disseminated intravascular coagulopathy
o Gastritis
o Gastritis, stress, erosive
o Cirrhosis
o Esophagitis
o Peptic ulcer disease
o Thrombocytopenia
o Peptic esophagitis, chronic
o Telangiectasia
o Renal Failure Chronic
o Barrett's esophagus syndrome
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Eponymic, Esoteric Disorders
o Blue rubber bleb nevus syndrome
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Pathophysiologic
o Bleeding diathesis
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Heirarchical Major Groups
o Gastric disorders
o Esophagus disorders
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Drugs
o Aspirin (Acetylsalicylic acid) Administration/Toxicity
o Non-steroidal anti-inflammatory drug
o Corticosteroid Administration/Toxicity
o Aspirin gastritis
o Iron intoxication, acute
o Salicylate intoxication/overdose
o Drug induced Gastritis.
o Warfarin (Coumadin) Administration/Toxicity
o Chemotherapy, cancer (anti-neoplastic)
o Heparin Administration/Toxicity
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Poisoning (Specific Agent)
o Baneberry (Actaea) intake/poisoning
o Puff adder snakebite. (Bitis)
o Alcohol gastritis
o Cuckcoopint/Arum/Wake-Robin plant
o Alkali corrosive/ingestion
o Caustic agent ingestion
o Corrosive agent ingestion
o Corrosive esophagitis
o Isopropyl alcohol ingestion/poisoning
o Mercury salts/bichloride acute toxicity
o Mushroom/Amanita Phalloides poisoning
o Thallium poisoning
o Alkali Ingestion/Poisoning
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Organ Poisoning (Intoxication)
o Corrosive gastritis
o Gastritis, erosive/corrosive
o Toxic gastritis/poison
o Jejunal ulcer/stenosis from K tabs
PS.. when looking for causes of things, google "differential diagnosis" . That is what will tell you the possible causes of the symptom you are interested in.