Causes of Severe Left-Side Abdominal Pain in Women

🚨 EMERGENCY Causes (Seek Immediate Care)

🔴 Gynecological Causes

1. Ovarian Cyst — Fluid-filled sac on the left ovary; causes dull, aching, or sharp pain; worsens with movement or intercourse
2. Pelvic Inflammatory Disease (PID) — Infection of the uterus/fallopian tubes, often from STIs; pain with fever, abnormal discharge, painful urination
3. Endometriosis — Uterine-like tissue grows outside the uterus, causing sharp, cyclical pain that worsens during menstruation
4. Tubo-Ovarian Abscess — Collection of pus in fallopian tube/ovary; severe pain, fever, and tenderness
5. Uterine Fibroids (Leiomyomas) — Non-cancerous uterine growths that can cause pelvic pressure and pain
6. Mittelschmerz — Mid-cycle ovulation pain from the left ovary (typically short-lived, one-sided)
7. Dysmenorrhea — Severe menstrual cramps (primary or secondary)

🟠 Digestive (Gastrointestinal) Causes

1. Diverticulitis — Inflammation/infection of small colon pouches; most common cause of left lower quadrant pain, especially in women over 40; comes with fever, nausea, change in bowel habits
2. Irritable Bowel Syndrome (IBS) — Recurring cramps, bloating, diarrhea or constipation; often triggered by stress or food
3. Constipation / Trapped Gas — Buildup in the descending colon causes cramping and bloating; relieved after bowel movement
4. Inflammatory Bowel Disease (Crohn's/Colitis) — Chronic inflammation; abdominal pain, diarrhea, blood in stool
5. Bowel Obstruction — Colicky severe pain, vomiting, inability to pass stool or gas

🟡 Urinary Tract Causes

1. Kidney Stone (Ureteral Colic) — Severe, colicky pain radiating from the left flank/costovertebral angle down to the lower abdomen; nausea, blood in urine
2. Urinary Tract Infection (UTI) — Burning urination, pelvic pain; can progress to kidney infection (pyelonephritis) with flank pain and fever
3. Pyelonephritis — Kidney infection with left flank pain, fever, chills

🟢 Musculoskeletal Causes

• Muscle Strain — From overexertion, coughing, sneezing; sharp pain that worsens with movement
• Hernia — Tissue bulging through abdominal wall

When to Go to the ER Immediately

• Fever and chills
• Vaginal bleeding (especially if pregnant)
• Fainting or dizziness (signs of internal bleeding)
• Persistent vomiting
• Inability to pass stool or gas with abdominal distension
• Blood in stool or urine
• Pain that is sudden, severe, or rapidly worsening

Sources: Berek & Novak's Gynecology | Yamada's Textbook of Gastroenterology | Tintinalli's Emergency Medicine | Rosen's Emergency Medicine

⚠️ This is general medical information only. Severe abdominal pain in a woman should always be evaluated by a doctor — some causes (like ectopic pregnancy or ovarian torsion) can be fatal within hours if untreated.

Treatment of Gynecological Causes of Left Abdominal Pain in Women

1. 🚨 Ectopic Pregnancy

• Methotrexate (folate antagonist) — injected IM; destroys rapidly growing trophoblast cells
• Criteria: hemodynamically stable, unruptured, small mass, low β-hCG levels
• Serial β-hCG monitoring required to confirm resolution

• Laparoscopy (preferred) — less blood loss, shorter hospital stay, faster recovery than open surgery
  • Salpingostomy — tube preserved, ectopic removed (for fertility preservation)
  • Salpingectomy — tube removed (used when tube is severely damaged)
• Laparotomy — for hemodynamically unstable (ruptured) patients requiring emergency surgery

— Berek & Novak's Gynecology; Textbook of Family Medicine 9e

2. 🔴 Ovarian Torsion (Adnexal Torsion)

• Laparoscopic detorsion — untwisting the ovary; performed urgently to restore blood supply
• Cystectomy — removal of the underlying cyst (if cyst caused torsion)
• Oophorectomy — removal of the ovary if it is necrotic/non-viable
• Earlier intervention = better chance of preserving the ovary and fertility

3. 🔴 Ruptured / Hemorrhagic Ovarian Cyst

Conservative management is preferred to avoid unnecessary surgery and protect future fertility. — Harrison's Principles of Internal Medicine 22E

4. 🔴 Pelvic Inflammatory Disease (PID)

• Ceftriaxone 250 mg IM single dose + Doxycycline 100 mg orally twice daily × 14 days ± Metronidazole 500 mg orally twice daily × 14 days
• OR Cefoxitin 2 g IM single dose + Probenecid + Doxycycline ± Metronidazole

• Cefotetan 2 g IV every 12 hrs + Doxycycline 100 mg IV/orally every 12 hrs
• OR Cefoxitin 2 g IV every 6 hrs + Doxycycline
• OR Clindamycin 900 mg IV every 8 hrs + Gentamicin loading dose IV/IM
• Alternative: Ampicillin/Sulbactam 3 g IV every 6 hrs + Doxycycline

Remove intrauterine device (IUD) if present. Treat sexual partners. — Schwartz's Principles of Surgery 11e (CDC 2015 Guidelines)

5. 🟠 Tubo-Ovarian Abscess (TOA)

• IV antibiotics (same PID regimens above) as first-line
• Image-guided drainage (CT or ultrasound-guided) if no response to antibiotics
• Surgical drainage / salpingo-oophorectomy for ruptured or refractory abscess

6. 🟠 Endometriosis

— Berek & Novak's Gynecology; Schwartz's Principles of Surgery

7. 🟡 Uterine Fibroids (Leiomyomas)

• Mild symptoms: NSAIDs, combined OCP for pain/bleeding control
• Moderate: GnRH agonists to shrink fibroids pre-operatively
• Surgical: Myomectomy (removes fibroid, preserves uterus) or Hysterectomy (definitive)
• Minimally invasive: Uterine artery embolization (UAE)

8. 🟡 Dysmenorrhea (Painful Periods)

• Primary: NSAIDs (ibuprofen, naproxen) started at onset of menstruation; OCP for hormonal suppression
• Secondary (from endometriosis/fibroids): Treat the underlying cause

General Pain Management (Across All Causes)

• NSAIDs (ibuprofen, naproxen) — first-line analgesics
• Heat therapy — local heat application helps muscle cramping
• Opioids — only for severe acute pain in hospital settings
• Counselling & physiotherapy — for chronic pelvic pain

⚠️ Treatment must be guided by a gynecologist after proper examination, ultrasound, and laboratory tests. Self-treatment of severe or emergency gynecological conditions can be life-threatening.

Sources: Berek & Novak's Gynecology | Schwartz's Principles of Surgery 11e | Harrison's Principles of Internal Medicine 22E | CDC 2015 STI Treatment Guidelines