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  • Title: [Recurrent coma, papular mucinosis and benign dysglobulinemia].
    Author: Verier A, Jouet JP, Muller JP, Destee A, Thomas P, Warot P.
    Journal: Rev Neurol (Paris); 1987; 143(12):791-7. PubMed ID: 2964074.
    Abstract:
    A woman presented with a history of three regressive comas of undetectable etiology between the age of 52 and 57 years. An IgG lambda benign monoclonal dysglobulinemia was combined with a papular mucinosis (myxedematous lichen or the generalized form of Arndt-Gotton's scleromyxedema). In the 6 analogous cases documented in the literature the onset of coma occurred generally several weeks after an aggravation of the cutaneous lesions. The coma was preceded by an influenza-like syndrome followed by asthenia, malaise with vertigo and frequently epileptic seizures. During recovery, hallucinations and transient hepatic disorders were noted. Pruritus with pronounced hypereosinophilia preceded desquamation and regression of dermatologic lesions. These comas can lead to a fatal outcome (2 of 7 cases) or regress in 2 to 20 days usually without sequelae. The disease is probably of immunologic origin. The paraprotein or a serum factor could exert a direct toxic effect on brain. As in neurologic manifestations of malignant dysglobulinemia, explained initially by a "toxic encephalosis, clinical, angiography, biologic and immunologic data exist in favor of blood hyperviscosity. This hyperviscosity could result from polymer formation through intermediates immunoglobulins and other protein chains, or again from alteration of deformability of red cells by binding of paraprotein. Hyperviscosity syndromes are frequent in system diseases that are often associated with papular mucinosis. Whatever the exact mechanism of these "comas due to papular mucinosis", a logical choice is their treatment by immunosuppressants and plasmapheresis: in the case reported, the use of plasmapheresis as soon as premonitory signs had appeared probably prevented a fourth coma.
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