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Hypokalemia leading to the diagnosis of primary Sjögren’s syndrome: the role of early renal biopsy

Key takeaways

This case report describes one patient with low blood potassium (hypokalemia). A kidney biopsy, where a small piece of kidney is taken for testing, led to a diagnosis of Sjögren's syndrome. Sjögren's is an immune disease that can harm the kidneys. The authors argue for doing a biopsy early in cases like this. It is one patient's story, which shows a possible link, not proof.

Who did this work

Meriam Hajji (Hôpital Charles-Nicolle) · Najla Zran (Hôpital Charles-Nicolle) · Meriam Ben Mbarek (Hôpital Charles-Nicolle) · Feryel Abid (Hôpital Charles-Nicolle) · R. Bourguiba (Tunisia Polytechnic School) · Hayet Kaaroud (Hôpital Charles-Nicolle) · S. Barbouch (Hôpital Charles-Nicolle) · Ezzeddine Abderrahim (Hôpital Charles-Nicolle)

Source

Paper · OpenAlex, Kidney disease concept sweep (verified C2778653478) · 2026-09-14
https://doi.org/10.1186/s43162-026-00722-y