Differential Diagnosis for 65F with Lower Abdominal Pain
Single Most Likely Diagnosis
- Diverticulitis: This condition is common in older adults and can cause severe lower abdominal pain, especially on the left side. The patient's age and symptom location make diverticulitis a plausible diagnosis.
Other Likely Diagnoses
- Urinary Tract Infection (UTI): UTIs are common in women, especially after menopause, and can cause lower abdominal pain, dysuria, and frequency.
- Constipation: Constipation is a common issue in older adults and can cause significant abdominal pain and discomfort.
- Ovarian Cyst: Although less common in postmenopausal women, ovarian cysts can still occur and cause lower abdominal pain.
Do Not Miss Diagnoses
- Appendicitis: Although less common in older adults, appendicitis can still occur and is a surgical emergency. Delayed diagnosis can lead to perforation and increased mortality.
- Ectopic Pregnancy: Although unlikely in a 65-year-old woman, ectopic pregnancy can still occur, especially with the use of fertility treatments or in women with a history of tubal ligation.
- Ruptured Abdominal Aortic Aneurysm (AAA): AAA is more common in older adults and can cause severe, sudden-onset lower abdominal pain. Prompt diagnosis and treatment are crucial to prevent high mortality.
- Bowel Obstruction: Bowel obstruction can cause severe abdominal pain, nausea, and vomiting. Delayed diagnosis can lead to bowel ischemia and perforation.
Rare Diagnoses
- Endometriosis: Although rare in postmenopausal women, endometriosis can still cause lower abdominal pain, especially if the patient is on hormone replacement therapy.
- Inflammatory Bowel Disease (IBD): IBD, such as Crohn's disease or ulcerative colitis, can cause chronic lower abdominal pain and diarrhea. Although rare in older adults, IBD can still occur and requires prompt diagnosis and treatment.