The Calgary Guide to Understanding Disease @TheCalgaryGuide
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IgA Vasculitis – Henoch Scholein Purpura: Pathogenesis and Clinical Findings

 - Infectious Agents - 50% have
IgA Vasculitis – ... Leukocytoclastic vasculitis ... Cutaneous small vessel vasculitis ... periumbilical region), nausea ... Pathophysiology #Diagnosis
X-Linked Agammaglobulinemia: Pathogenesis and clinical findings
The epidemiology of this disease is 1/340,000 births and roughly double
40% of patients diagnosed ... to produce all classes ... undetectable levels of IgA ... , IgG, and IgM
Subtrochanteric Femur Fracture: Pathogenesis and clinical findings
 • Subtrochanteric region spans 5 cm distally from the
fractures in elderly Causes ... Fractures #msk #orthopedics ... #diagnosis #differential ... #causes #pathophysiology
Subjective Tinnitus: Pathogenesis and clinical findings
Subjective Tinnitus - Perceived sound with no acoustic stimulus, heard only
refers to sound caused ... #Tinnitus #Causes ... pathophysiology #differential ... #diagnosis
Polyarteritis Nodosa (PAN): Pathogenesis and Clinical Findings

Medical Comorbidities Malignancies (most commonly hairy-cell leukemia)
Immunogenetic Predisposition: patient is
Viral replication causes ... Pathophysiology #Diagnosis ... Signs #Symptoms #Vasculitis
Growth Hormone Excess - Pathogenesis and clinical findings
 • Acromegaly and gigantism share the same pathophysiology
• Other rare causes ... Bitemporal hemianopsia IGF ... Overproduction #diagnosis
Rheumatoid arthritis (RA): Extra-articular manifestations
Skin: 
 • Inflammation of skin (esp. over areas of stress) forms
blood vessels (vasculitis ... inflammation tends to cause ... signs #symptoms #diagnosis
Lupus (SLE): Mucocutaneous Manifestations

 • Langerhan cells and keratinocytes release cytokines -> localized inflammatory response ->
hair follicles -> causes ... Livedo Reticularis, Vasculitis ... pathophysiology #diagnosis
Medical Conditions Causing Mania or Mania-Like Episodes: Pathogenesis
 • Bipolar Disorder -> Combination of individual, genetic,
Manic #Secondary #Causes ... #Differential # ... Diagnosis #Pathophysiology
Acquired Disorders of Reduced Bone Strength: Pathogenesis
 • Hyperparathyroidism
 • Vitamin D deficiency
 • Malabsorption syndromes
Diabetes • Other causes ... pathophysiology #differential ... #diagnosis #osteoporosis