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Differential Diagnosis

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Differential Diagnosis

  1. 1. DIFFERENTIAL DIAGNOSIS
  2. 2. What is DDx?  a systematic method of diagnosing a disorder (e.g., headache) that lacks unique symptoms or signs wordnetweb.princeton.edu/perl/webwn  A differential diagnosis (sometimes abbreviated DDx, ddx, DD, or ΔΔ) is a systematic method used to identify unknowns. en.wikipedia.org/wiki/Differential_diagnosis  the process of identifying a condition by comparing the signs and symptoms of all pathologic processes that may produce similar signs and symptoms www.juniordentist.com/gpt-terms-d.html
  3. 3. Why DDx?  Ask appropriate question  Request appropriate investigation  Accurate Rx  Appropriate Mx  Patient will get better instead of worse….
  4. 4. Techniques 1. I-VINDICATE 2. SYSTEMS 3. STRUCTURE 4. PATTERN
  5. 5.  Iatrogenic  Vascular  Infectious/Inflammatory  Neoplastic  Degenerative  Idiopathic  Congenital  Autoimmune/Allergy  Traumatic  Endocrinal/Emotional
  6. 6. SYSTEMS  Cardiovascular  Endocrine  Respiratory  Musculoskeletal  Gastrointestinal
  7. 7. STRUCTURE  Heart  Lungs  Muscle  Nerve  Tendon
  8. 8. PATTERN  Crushing Chest pain + Radiating to Arm & neck + cold sweats  Staring Look + Intolerant toWarm +Tremor  Fever + rash + drop in platlet count + bleeding gums

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