Background:
Among a variety of more common differential diagnoses, the aetiology of acute respiratory failure includes Lyme neuroborreliosis.
Case presentation:
We report an 87-years old huntsman with unilateral phrenic nerve palsy as a consequence of Lyme neuroborreliosis.
Conclusion:
Although Lyme neuroborreliosis is a rare cause of diaphragmatic weakness, it should be considered in the differential workup because of its potentially treatable nature.