Nephrology Book

Potassium Disorders Chapter

Abnormally Increased

Abnormally Decreased

Familial Periodic Paralysis
Hypokalemia
Hypokalemia due to Extrarenal Potassium Loss
Hypokalemia due to Renal Potassium Loss
Hypokalemia due to Transcellular Potassium Shift

Pathology and Laboratory Medicine Chapter related topics

Pharmacology Chapter related topics

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Familial Periodic Paralysis

Aka: Familial Periodic Paralysis, Hypokalemic Periodic Paralysis

Epidemiology
1. Onset of symptoms before 20 yo
Pathophysiology
1. Autosomal dominant disorder of Hypokalemia
Symptoms
1. Headaches
2. Thirst
3. Lethargy
Signs
1. Slow progressive weakness
2. Intermittent muscular paralysis
  1. Shoulder
  2. Pelvic girdle
  3. Other areas follow
3. Muscle strength normal between attacks
4. Deep Tendon Reflexes
  1. Diminished or absent
Labs
1. Electrolytes: Hypokalemia

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