PMID- 18218131 OWN - NLM STAT- PubMed-not-MEDLINE DCOM- 20100628 LR - 20211020 IS - 1749-7221 (Electronic) IS - 1749-7221 (Linking) VI - 3 DP - 2008 Jan 24 TI - Unusual presentation of hereditary neuropathy with liability to pressure palsies. PG - 2 LID - 10.1186/1749-7221-3-2 [doi] AB - BACKGROUND: Hereditary neuropathy with liability to pressure palsies (HNPP) is an autosomal-dominant painless peripheral neuropathy characterized by episodes of repeated focal pressure neuropathies at sites of entrapment/compression, with a considerable variability in the clinical course. Electrodiagnostic and genetic testing are important in the diagnostic evaluation of these patients. CASE PRESENTATION: We report an unusual HNPP phenotype, five compression neuropathies in four nerves in a patient with bilateral hand numbness. A 42-year-old female, presented with acute bilateral paresthesias and weakness in her hands after starting yoga exercises requiring hyperextension of her hands at the wrists. Her presentation was complicated by: a) a remote history of acute onset foot drop and subsequent improvement, b) previous diagnoses of demyelinating peripheral neuropathy, possibly Charcot-Marie-Tooth disease, and c) exposure to leprosy. Electrodiagnostic testing showed 5 separate compression neuropathies in 4 nerves including: severe left and right ulnar neuropathies at the wrist, left and right median neuropathies at the wrist and left ulnar neuropathy at the elbow. There was a mild generalized, primarily demyelinating, peripheral polyneuropathy. Based on the clinical suspicion and electrodiagnostic findings, consistent with profound demyelination in areas of compression, genetic analysis was done which identified a deletion of the PMP-22 gene consistent with HNPP. CONCLUSION: HNPP can present with unusual phenotypes, such as 5 separate mononeuropathies, bilateral ulnar and median neuropathies at the wrists and ulnar neuropathy at the elbow with mild peripheral demyelinating polyneuropathy associated with the PMP-22 gene deletion. FAU - Farooq, Muhammad U AU - Farooq MU AD - Department of Physical Medicine and Rehabilitation, Michigan State University, East Lansing, MI, USA. muhammad.farooq@ht.msu.edu FAU - Martin, Jayne H W AU - Martin JH FAU - Andary, Michael T AU - Andary MT LA - eng PT - Case Reports DEP - 20080124 PL - United States TA - J Brachial Plex Peripher Nerve Inj JT - Journal of brachial plexus and peripheral nerve injury JID - 101265114 PMC - PMC2248584 EDAT- 2008/01/26 09:00 MHDA- 2008/01/26 09:01 PMCR- 2008/01/24 CRDT- 2008/01/26 09:00 PHST- 2007/11/30 00:00 [received] PHST- 2008/01/24 00:00 [accepted] PHST- 2008/01/26 09:00 [pubmed] PHST- 2008/01/26 09:01 [medline] PHST- 2008/01/26 09:00 [entrez] PHST- 2008/01/24 00:00 [pmc-release] AID - 1749-7221-3-2 [pii] AID - 10.1186/1749-7221-3-2 [doi] PST - epublish SO - J Brachial Plex Peripher Nerve Inj. 2008 Jan 24;3:2. doi: 10.1186/1749-7221-3-2.