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Primary and Secondary Headache Types - Differential Classification

- By Dr. Eric Strong @DrEricStrong

#Headaches #Primary #Secondary #Types
Primary and Secondary ... Headache Types ... - Differential Classification ... #Differential # ... #Table
Hypersensitivity Types and Their Mechanisms
Type I - lgE - Soluble antigen
 - Allergen-specific lgE antibodies bind
Hypersensitivity ... antigen, leading to complement ... Complement activation ... #Types #Classification ... Diagnosis #Reactions #Table
Summary table of types of hypersensitivity reactions. 
Type 1
 - Mediators: lgE
 - Antigen Form: Soluble
Summary table of ... types of hypersensitivity ... they activate complement ... #allergy #table ... #classification
Hypokalemia - Differential Diagnosis
Poor Intake 
 - Starvation
 - Anorexia
GI Losses 
 - Vomiting / NG
Hypokalemia - Differential ... Ureterosigmoidostomy Urinary ... #Diagnosis #Low ... #Potassium #Table ... #Classification
The Diagnostic Approach to Hyperkalemia
Drugs
 - Amiloride
 - Spironolactone
 - Triamterene
 - Trimethoprim
 - Pentamidine
 -
I, type II - ... High Renin - Primary ... Ketoconazole Low ... #Hyperkalemia #Algorithm ... #diagnosis #differential
Rapidly Progressive Glomerulonephritis (RPGN)
RPGN has three primary pathophysiologic causes differentiated by immunofluorescence

Immune Complex Mediated (granular staining):
RPGN has three primary ... staining): • Low ... Complement: Post-strep ... Glomerulonephritis #Vasculitis #differential ... #diagnosis #algorithm
Cryoglobulinemia Summary

Cryoglobulins:
 • Cryoglobulins are Igs in the serum that precipitate in vitro at temperatures below
Types: • Type ... factor level • Low ... serum C4 complement ... vasculitis • Hypersensitivity ... #classification
Causes of Nephrolithiasis - Differential Diagnosis Algorithm
Radio-opaque - Calcium-containing - 90% of stones
Radiolucent - Non-calcium 10%
Nephrolithiasis - Differential ... Diagnosis Algorithm ... of stones: • Urinary ... solubility: • Low ... Hypocitraturia • RTA Type
Hypomagnesemia - Etiologies by Mechanism

Decreased GI Uptake 
 - Poor dietary intake (particularly common in alcoholics)
inhibitors - Primary ... Hypomagnesemia #Differential ... #Diagnosis #Low ... #Magnesium #Table ... #Classification
Physiologic Approach to Hypotonic Hyponatremia
The next time you have a case of hypotonic hyponatremia, give the
normal volume-based algorithm ... can be high or low ... water intake (Primary ... #Hyponatremia #differential ... #diagnosis #table