Rectal bleeding causes

Common Causes of Rectal bleeding

• Hemorrhoids

• Anal fissure

• Diverticulosis

• Infectious colitis

• Inflammatory bowel disease

• Angiodysplasia

• Colonic polyps

Complete Differential Diagnosis of the Causes of Rectal bleeding

(By organ system)

Cardiovascular	Angiodysplasia, Ischaemic colitis, Osler-Weber-Rendu syndrome, Hereditary hemorrhagic telangiectasia
Chemical / poisoning	No underlying causes
Dermatologic	Carney's syndrome
Drug Side Effect	Clopidogrel, Ampicillin induced colitis, C.difficile induced colitis, Cephalosporin induced colitis, Clindamycin induced colitis, Fluoroquinolone induced colitis, Warfarin
Ear Nose Throat	No underlying causes
Endocrine	Carney's syndrome
Environmental	Radiation telangiectasia
Gastroenterologic	Carney's syndrome, Hereditary hemorrhagic telangiectasia, Radiation telangiectasia, Hemolytic uremic syndrome, Angiodysplasia, Ischaemic colitis, Osler-Weber-Rendu syndrome, Ampicillin induced colitis, C.difficile induced colitis, Cephalosporin induced colitis, Clindamycin induced colitis, Fluoroquinolone induced colitis, Familial adenomatous polyposis, Gastrointestinal duplication, Hirschsprung disease, Lymphonodular hyperplasia, Post biopsy, Postpolypectomy, Radiation therapy, Infectious colitis, Allergic colitis, Campylobacter colitis, Campylobacter induced diarrhoea, E.coli induced diarrhoea, Salmonella colitis, Salmonellosis, Shigella colitis, Shigellosis, Yersinia induced diarrhoea, Amoebic colitis, CMV colitis, Anal cancer, Anal fissure, Colon cancer, Colon polyp, Constipation, Crohns disease, Diarrhoea, Diverticulosis, Diverticulitis, Dysentery , Esophageal varices, Esophagitis, Fistula in ano, Food poisoning , Gastritis, Gastroenteritis, Gastrointestinal stromal tumors, Haemmorhoids, Intusseception, Malrotation of gut, Meckel's diverticula, Nectrotizing enterocoloitis, Peptic ulcer disease, Perforated peptic ulcer, Proctitis, Pseudomembranous colitis, Rectal prolapse, Solitary rectal ulcer syndrome, Stercoral ulcers, Stomach cancer, Typhilitis, Ulcerative colitis, Volvulus
Genetic	Carney's syndrome, Hereditary hemorrhagic telangiectasia, Familial adenomatous polyposis, Gastrointestinal duplication, Hirschsprung disease
Hematologic	Warfarin, Coagulopathy, Hemophilia, Henoch-Schonlein purpura, Idiopathic thrombocytopenic purpura, Von Wilibrand's disease, Clopidogrel, Lymphonodular hyperplasia, Hemolytic uremic syndrome
Iatrogenic	Radiation telangiectasia, Post biopsy, Postpolypectomy, Radiation therapy
Infectious Disease	Infectious colitis Bacteria: Campylobacter colitis, Campylobacter induced diarrhoea, E.coli induced diarrhoea, Salmonella colitis, Salmonellosis, Shigella colitis, Shigellosis, Yersinia induced diarrhoea Fungi: No underlying causes Virus: CMV colitis, Yellow fever Parasite: Amoebic colitis
Musculoskeletal / Ortho	No underlying causes
Neurologic	No underlying causes
Nutritional / Metabolic	No underlying causes
Obstetric/Gynecologic	Swallowed maternal blood
Oncologic	No underlying causes
Opthalmologic	No underlying causes
Overdose / Toxicity	No underlying causes
Psychiatric	No underlying causes
Pulmonary	No underlying causes
Renal / Electrolyte	Hemolytic uremic syndrome
Rheum / Immune / Allergy	No underlying causes
Sexual	No underlying causes
Trauma	Sexual abuse, Anal intercourse
Urologic	No underlying causes
Dental	No underlying causes
Miscellaneous	No underlying causes

Complete Differential Diagnosis of the Causes of Rectal bleeding

(In alphabetical order)

Allergic colitis Amoebic colitis Ampicillin induced colitis Anal cancer Anal fiisure Anal intercourse Angiodysplasia C.difficile induced colitis Campylobacter colitis Campylobacter induced diarrhoea Carney's syndrome Cephalosporin induced colitis Clindamycin induced colitis Clopidogrel CMV colitis Coagulopathy Colon cancer Colon polyp Constipation Crohns disease Diarrhoea Diverticluosis Diverticulitis Dysentery E.coli induced diarrhoea Esophageal varices Esophagitis Familial adenomatous polyposis Fistula in ano Fluoroquinolone induced colitis Food poisoning Gastritis Gastroenteritis Gastrointestinal duplication Gastrointestinal stromal tumors Haemmorhoids Hemolytic uremic syndrome Hemophilia

Henoch-Schonlein purpura Hereditary hemorrhagic telangiectasia Hirschsprung disease Idiopathic thrombocytopenic purpura Infectious colitis Intusseception Ischaemic colitis Lymphonodular hyperplasia Malrotation of gut Meckel's diverticula Nectrotizing enterocoloitis Osler-Weber-Rendu syndrome Peptic ulcer disease Perforated peptic ulcer Post biopsy Postpolypectomy Proctitis Pseudomembranous colitis Radiation telangiectasia Radiation therapy Rectal prolapse Salmonella colitis Salmonellosis Sexual abuse Shigella colitis Shigellosis Solitary rectal ulcer syndrome Stercoral ulcers Stomach cancer Swallowed maternal blood Typhilitis Ulcerative colitis Volvulus Von Wilibrand's disease Warfarin Yellow fever Yersinia induced diarrhoea