Hematological disease associated with an acquired peripheral neuropathy

Hematological disease associated with an acquired peripheral neuropathy is a group classification (Orphanet code 209016) that encompasses several blood disorders in which peripheral nerve damage occurs as a secondary or associated feature. These conditions include hematological malignancies and clonal blood disorders — such as certain lymphomas, leukemias, multiple myeloma, Waldenström macroglobulinemia, and monoclonal gammopathies of undetermined significance (MGUS) — that produce paraproteins (abnormal immunoglobulins) or other factors that damage peripheral nerves. The peripheral neuropathy in these conditions typically manifests as numbness, tingling, weakness, pain, and sensory loss in the extremities, often in a distal symmetric pattern affecting the feet and hands. The nervous system involvement can be caused by direct infiltration of nerves by malignant cells, deposition of abnormal proteins, autoimmune-mediated nerve damage, or as a paraneoplastic phenomenon. The body systems primarily affected include the hematopoietic (blood-forming) system and the peripheral nervous system. Patients may experience fatigue, anemia, recurrent infections, or bleeding tendencies related to the underlying blood disorder, alongside progressive neurological symptoms such as gait instability, muscle wasting, and neuropathic pain. In some cases, the neuropathy may be the presenting symptom that leads to discovery of the underlying hematological condition. Treatment depends on the specific underlying hematological disease and may include chemotherapy, immunotherapy, plasma exchange (plasmapheresis), corticosteroids, intravenous immunoglobulin (IVIG), targeted therapies, or stem cell transplantation. Management of the neuropathy itself may involve pain management, physical therapy, and supportive care. Early identification and treatment of the underlying blood disorder can sometimes stabilize or improve the neuropathy.

Data sourced from FDA regulatory filings and ClinicalTrials.gov. Updated periodically.

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