Sjogren's syndrome combined with hypokalemic periodic paralysis (report of 2 cases with review of literature)

Abstract

Objective To explore the early diagnosis and the therapy of Sjogren's syndrome combined with hypokalemic periodic paralysis. Methods Clinical data of 2 cases with Sjogren's syndrome and hypokalemic periodic paralysis were analyzed. Results The first symptom of both two cases was suddenly or paroxysmal progressive four limbs weakness. The levels of serum potassium and chloride ion were decreased significantly, combined with alkaline urine, anti SS⁃A (+), anti SS⁃B (+), and sometimes with hyperthyroidism or hypothyroidism (the level of serum FT3 and FT4 being lower), or renal failure. In pathological examination of labial gland, mulifocality lymphocytes were seen in glandulae saliviae minores tissue in lower lip, or nature saliva flow rate measurement positive. All the patients' symptom improved after they were given potassium citrate, potassium chloride, sodium bicarbonate and levothyroxine (euthyrox). Conclusion The diagnosis of Sjogren's syndrome and hypokalemic periodic paralysis depends on comprehensive analysis of patient history, physical and laboratory examination. Early diagnosis and treatment can improve the prognosis. The treatment principle includes potassium supplement, correction of acidosis, improvement of thyroid function, and expectant alimentary support. DOI：10.3969/j.issn.1672⁃6731.2012.02.016

Keywords

• Sjogren's syndrome
• Hypokalemic periodic paralysis
• Acidosis, renal tubular
• Case reports