Association Between Systemic Lupus Erythematosus and Myasthenia Gravis: Coincidence or Sequelae?

A rare association: Obesity hypoventilation syndrome with myasthenia gravis and systemic lupus erythematosus, case report

Background

Shrinking lung syndrome (SLS) is an uncommon complication of systemic lupus erythematosus (SLE) that has also been seen in other autoimmune diseases and is linked with a high risk of acute or chronic respiratory failure. Alveolar hypoventilation in the presence of obesity-hypoventilation syndrome, systemic lupus erythematosus (SLE), and myasthenia gravis (MG) is uncommon and poses a diagnostic and therapeutic challenge.

Case report

We reported a 33-year-old female patient from Saudi Arabia who suffered from obesity, bronchial asthma, newly diagnosed essential hypertension, type 2 diabetes mellitus, with recurrent acute alveolar hypoventilation, secondary to obesity hypoventilation syndrome and mixed autoimmune disease (systemic lupus erythematosus and myasthenia gravis), based on the correct constellation of clinical findings and laboratory evidence.

Conclusion

The interesting aspect of this case report: is the presentation of the overlap of obesity hypoventilation syndrome and shrinking lung syndrome due to systemic lupus erythematosus with generalized and respiratory muscle dysfunction due to myasthenia gravis with good outcomes after therapy.

Myasthenia Gravis: An Unanticipated Cause of Failure to Wean in a Postpartum Patient with Pre-existing Systemic Lupus Erythematosus

Sudden onset and de novo Myasthenia gravis (MG) in the presence of systemic lupus erythematosus (SLE) is a rare postpartum phenomenon and can easily misguide the treating physician. A known case of SLE, 4 days after an elective cesarean section, presented to the intensive care unit for weaning-off mechanical ventilation after being put on ventilatory support in the emergency room, following acute-onset partial seizures. She was subsequently diagnosed to have new-onset MG, treated for the condition and later successfully extubated.