text: Many diseases can cause<unk> . Based on patient history and physical examination we can diagnose the cause of<unk> .  The challenging part is differentiating anterior<unk>  from posterior<unk> .
  Rhinoscopy is the best way to distinguish between anterior and posterior<unk> . In selected cases, endoscopy may be required.
option_0: Epistaxis differential diagnosis
option_1: Nausea and vomiting differential diagnosis
option_2: Stomatitis differential diagnosis
option_3: Lower gastrointestinal bleeding differential diagnosis
option_4: Epistaxis other imaging findings
option_5: Mallory-Weiss syndrome differential diagnosis
option_6: Odynophagia differential diagnosis
option_7: Anal fissure differential diagnosis