PT - JOURNAL ARTICLE AU - AlOtaibi, Muteb K. AU - AlQahtani, Bashaier G. AU - AlQawahmed, Raniah M. TI - Unmasking the mimic: Leprosy neuropathy misdiagnosed as chronic inflammatory demyelinating polyneuropathy: A case report from Saudi Arabia AID - 10.17712/nsj.2025.2.20240057 DP - 2025 Apr 01 TA - Neurosciences Journal PG - 157--161 VI - 30 IP - 2 4099 - http://nsj.org.sa/content/30/2/157.short 4100 - http://nsj.org.sa/content/30/2/157.full SO - Neurosciences (Riyadh)2025 Apr 01; 30 AB - Leprosy neuropathy can mimic chronic inflammatory demyelinating polyneuropathy (CIDP), especially in non-endemic areas. We report a 72-year-old Saudi woman initially misdiagnosed with CIDP based on nerve conduction studies. The patient presented with widespread pruritus, erythematous cutaneous lesions, and progressive sensorimotor symptoms. Despite treatment with intravenous immunoglobulin, her condition worsened. Subsequent sural nerve and skin biopsies revealed acid-fast bacilli, confirming leprosy. This case highlights the importance of considering leprosy in the differential diagnosis of neuropathies, even in regions where it is rare. Nerve ultrasound, a valuable diagnostic tool in differentiating leprosy from CIDP, should be incorporated into the diagnostic workup of atypical neuropathies.