Causes of blood diarrhea with abdomin distention in 60 year old man? ?

There are several potential causes of blood diarrhea with abdominal distention in a 60-year-old man, including:

1. Inflammatory bowel disease (IBD) such as Crohn's disease or ulcerative colitis
2. Colorectal cancer
3. Diverticulitis
4. Gastrointestinal bleeding from ulcers or other sources
5. Infectious causes such as bacterial or parasitic infections
6. Irritable bowel syndrome (IBS)
7. Hemorrhoids or anal fissures
8. Intestinal ischemia or infarction
9. Medication side effects
10. Gastrointestinal disorders such as celiac disease or lactose intolerance

It is important for the individual to seek medical attention promptly to determine the underlying cause and receive appropriate treatment.

Infectious Causes:

- Bacterial dysentery (e.g., Shigella, Salmonella, Campylobacter)
- Clostridioides difficile infection
- Amebiasis
- Inflammatory bowel disease (e.g., Crohn's disease, ulcerative colitis)

Non-Infectious Causes:

- Ischemic colitis
- Hemorrhagic vasculitis
- Diverticular disease
- Colon cancer
- Rectal cancer
- Radiation proctitis
- Infectious colitis (e.g., Clostridium difficile, Campylobacter jejuni)
- Ulcerative colitis
- Crohn's disease

Other Considerations:

- Certain medications (e.g., antibiotics, nonsteroidal anti-inflammatory drugs)
- Alcohol-related liver disease
- Hemolytic uremic syndrome
- Thrombotic thrombocytopenic purpura
- Vasculitis and autoimmune disorders

Additional Factors in a 60-Year-Old Man:

- Age-related changes in gastrointestinal function
- History of colon polyps or cancer
- Immunosuppression (e.g., due to medication or illness)
- Recent travel to areas with endemic enteric infections