II. Causes: Hernia
- Abdominal Wall Hernia- Umbilical Hernia
- Incisional Hernia
- Epigastric Hernia or Hypogastric hernia
- Spigelian Hernia (rare)- Transversus aponeurosis defect at lateral rectus abdominis inferior to arcuate line
 
 
- Groin Hernia
III. Causes: Neuropathy
- Herpes Zoster or Postherpetic Neuralgia
- Mononeuritis multiplex- Vasculitis
- Diabetes Mellitus (Diabetic Thoracic Polyradiculopathy)- Severe nerve root T6 to T12 truncal pain
- Longstreth (2005) Best Pract Res Clin Gastroenterol 19(2): 275-81 [PubMed]
 
 
- Nerve root compression or impingement- Thoracic Spine Radiculopathy- Spinal level T7 to L1 Nerve Roots
 
- Ilioinguinal nerve root entrapment (or Iliohypogastric nerve entrapment)- Common lower Abdominal Pain cause (esp. with prior Hernia Repair, appendectomy)
 
- Rectus abdominis nerve root entrapment- Lateral cutaneous branches of intercostal nerves
- Anterior cutaneous branch of subcostal nerve
- Anterior cutaneous branches of intercostal nerves (anterior cutaneous nerve entrapment)- Entrapment at the lateral rectus border onset in the upper Abdomen
- Localized unilateral sharp pain
- Most common cause of Abdominal Wall Pain
 
 
- Nerve root entrapment after Inguinal Hernia repair- Lateral cutaneous branches of subcostal nerve
- Lateral cutaneous branch of iliohypogastric nerve
 
 
- Thoracic Spine Radiculopathy
IV. Causes: Musculoskeletal Injury and Trauma
- 
                          Abdominal Trauma or Athletic Injury- Myofascial injury
- Abdominal wall Muscle Strain
- Rectus abdominis rupture
- Abdominal wall Hematoma (post-laparoscopy or Abdominal Trauma)
- Idiopathic intraabdominal adhesions
- Sports Hernia (Groin Pain)
 
- Surgical scar related changes- Neuroma formation
- Recurrent Endometriosis
 
- Slipping Rib Syndrome (Ribs 8 to 10)- Sharp, stabbing upper Abdominal Pain
- Diagnose by eliciting pain with hooking maneuver
 
V. Causes: Specific to Women
- Abdominal Wall Endometriosis
- Desmoid tumor- Dysplastic tumor often in young women
 
VI. Causes: Miscellaneous
- Spider Bite
- Xiphodynia- Reproducible pain on palpation of the xiphoid process
 
- Adiposis dolorosa (Dercum Disease, Anders Disease)- Multiple painful abdominal wall Lipomas (obese patients)
 
- Infection- Trichinosis
- Abdominal wall abscess
 
