What history questions should I ask a 47-year-old male presenting with right lower quadrant abdominal pain and hematochezia?

Essential History Questions for Right Lower Quadrant Pain with Hematochezia in a 47-Year-Old Male

You must obtain a comprehensive history focused on distinguishing between common causes including appendicitis, diverticulitis, inflammatory bowel disease, ischemic colitis, and colorectal malignancy, while recognizing this patient's age places him at increased risk for early-onset colorectal cancer.

Bleeding Characteristics

• Describe the blood appearance: Bright red blood dripping into the toilet suggests hemorrhoidal or distal colonic bleeding, while darker blood mixed with stool indicates a more proximal source 1.
• Quantify bleeding volume and frequency: Ask about number of episodes, amount per episode, and whether blood is on toilet paper, coating stool, or mixed throughout 1.
• Timing relative to pain onset: Determine whether bleeding preceded, accompanied, or followed the abdominal pain 1.

Pain Characteristics

• Onset and progression: Sudden onset suggests ischemia or perforation, while gradual worsening over days suggests appendicitis or diverticulitis 1.
• Migration pattern: Periumbilical pain migrating to the right lower quadrant is classic for appendicitis, though present in only ~50% of cases 1.
• Character and severity: Sharp, colicky pain suggests obstruction; constant, severe pain suggests inflammation or ischemia 1.
• Aggravating/relieving factors: Pain with movement suggests peritoneal irritation 1.

Associated Gastrointestinal Symptoms

• Stool frequency and consistency: Diarrhea suggests inflammatory bowel disease or infectious colitis; constipation suggests obstruction or diverticular disease 1.
• Last bowel movement and flatus passage: Absence suggests obstruction 1.
• Nausea, vomiting, anorexia: These accompany appendicitis in the classic presentation 1.
• Weight loss: Unexplained weight loss raises concern for malignancy or inflammatory bowel disease 1.
• Tenesmus and urgency: Suggest rectal or distal colonic pathology 1.

Systemic Symptoms

• Fever: The triad of right lower quadrant pain, fever, and leukocytosis suggests appendicitis, though fever with left-sided symptoms suggests diverticulitis 1.
• Malaise and fatigue: May indicate inflammatory bowel disease, malignancy, or anemia from chronic bleeding 1.

Medication History

• Anticoagulants and antiplatelet agents: Aspirin, warfarin, or novel anticoagulants increase risk of intramural hematoma 2.
• NSAIDs: Can cause or exacerbate colitis and should be documented and discontinued 1.
• Antibiotics: Recent use may predispose to C. difficile colitis 1.
• Illicit drug use: Methamphetamine and cocaine can cause ischemic colitis 3.

Past Medical and Surgical History

• Previous abdominal surgery: Prior surgery has 85% sensitivity and 78% specificity for predicting adhesive small bowel obstruction 1.
• Diverticulitis episodes: Prior episodes increase likelihood of recurrent diverticular disease 1.
• Inflammatory bowel disease: Previous diagnosis or symptoms suggesting Crohn's disease or ulcerative colitis 1.
• Cardiovascular disease: Atrial fibrillation, peripheral vascular disease, or recent myocardial infarction increase risk of mesenteric ischemia 1.
• Coagulopathy or bleeding disorders: Increase risk of intramural hematoma 2, 4.

Family History

• Colorectal cancer: One first-degree relative <50 years or two first-degree relatives at any age significantly increases risk 1.
• Inflammatory bowel disease: Family history increases risk of developing ulcerative colitis or Crohn's disease 1.

Social and Lifestyle History

• Smoking status: Current, former, or never—smoking reduces ulcerative colitis risk but ex-smokers have 70% higher risk 1.
• Recent travel: Exposure to endemic infections or parasites 1.
• Sexual history: Risk factors for proctitis from sexually transmitted infections 1.
• Dietary history: Poor iron intake may contribute to anemia; recent dietary changes 1.

Red Flag Symptoms Requiring Urgent Evaluation

• Age >45 years with new-onset hematochezia: This patient requires complete colonic evaluation given increased early-onset colorectal cancer incidence in this age group, with rectal bleeding being the most common presenting symptom (50.8%) 1.
• Rectal bleeding with abdominal pain: This combination warrants anoscopy and flexible sigmoidoscopy at minimum, with colonoscopy indicated for atypical features or age-related cancer risk 1.
• Constitutional symptoms: Fever, significant weight loss, or night sweats suggest serious pathology 1.