Thyrotoxic hypokalemic periodic paralysis (THPP) is a medical emergency characterized by acute attacks of weakness, hypokalemia, and thyrotoxicosis that resolve with the treatment of hyperthyroidism. Attacks are transient, self-limited, associated with hypokalemia and resemble those of familial hypokalemic periodic paralysis (FHPP), an autossomal dominant neurological channelopathy. This study reviews the clinical features and genetic findings of THPP in 25 Brazilian patients. Most patients had weight loss, taquicardia, goiter, tremor, and ophthalmopathy. Most often attacks arose during the night and recovered […]

Periodic paralysis is an uncommon complication of primary aldosteronism in the non-Asian population. We describe the case of a Brazilian woman who presented to the emergency room with proximal symmetric tetraparesis that was later diagnosed as primary aldosteronism. This case report shows that primary aldosteronism should be included in the differential diagnosis of periodic paralysis, especially among hypertensive patients.