About This Condition
Diverticular disease refers to a spectrum of conditions arising from colonic diverticula, including asymptomatic diverticulosis, symptomatic uncomplicated diverticular disease, acute diverticulitis, and diverticular bleeding. Diverticula are outpouchings of the colonic wall that occur most commonly in the sigmoid colon and become more prevalent with age. Many individuals remain asymptomatic, while a subset develop chronic abdominal symptoms or acute inflammatory or bleeding complications.
Uncomplicated diverticulitis typically presents with acute or subacute left lower quadrant abdominal pain, localized tenderness, low-grade fever, and changes in bowel habits such as constipation or diarrhea. Nausea, bloating, and anorexia are common. Complicated diverticulitis involves abscess, perforation, fistula, or obstruction and may present with more severe pain, systemic toxicity, or peritoneal signs. Diverticular bleeding usually manifests as painless hematochezia and can range from mild to brisk.
Diagnosis of diverticular disease is based on characteristic clinical features supported by imaging—most often contrast-enhanced CT—for suspected diverticulitis, and colon evaluation to exclude malignancy and other pathology when appropriate. Management ranges from dietary and lifestyle modification and symptom control for uncomplicated disease to antibiotics, image-guided drainage, or surgery in selected cases, with attention to recurrence risk and alternative diagnoses.
Common Symptoms
- •Recurrent or acute-onset left lower quadrant abdominal pain or tenderness, especially in the sigmoid colon region
- •Change in bowel habits, including constipation, diarrhea, or alternating patterns, often accompanying pain episodes
- •Low-grade fever, malaise, and systemic discomfort in patients with acute diverticulitis
- •Bloating, abdominal distension, or increased gas, particularly after meals
- •Nausea or decreased appetite during acute inflammatory episodes
- •Painless hematochezia or maroon-colored stool in patients with diverticular bleeding
Our Functional Medicine Approach
Beyond the antibiotic course
Acute diverticulitis needs antibiotics and sometimes hospitalization — that's gastroenterology. Where standard care stops is the much harder question: how do you avoid the next flare? The upstream drivers are usually some combination of low-fiber dietary patterns over years, gut dysbiosis, chronic low-grade inflammation, constipation patterns, and motility issues. None of those resolve on their own.
How Spire works the root cause
Once the acute episode is resolved, we run a structured workup — microbiome and stool analysis, food sensitivity work, motility evaluation, inflammatory markers — and design a sustainable fiber, prebiotic, and lifestyle plan that fits your real life. Patients with recurrent flares benefit from longer-term coaching and monitoring so the next year doesn't look like the last.
Who this is for
Adults recovered from a recent diverticulitis episode wanting to prevent recurrence, patients with chronic diverticulosis who feel a flare brewing, and anyone with the family pattern who wants to act before the first attack.