Post-Epidemic Eosinophilia-Myalgia Syndrome Associated With L-Tryptophan
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Allen, Jeffrey A.
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机构:Northwestern Univ, Div Rheumatol, Feinberg Sch Med, Chicago, IL 60612 USA
Allen, Jeffrey A.
Peterson, Alicia
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机构:Northwestern Univ, Div Rheumatol, Feinberg Sch Med, Chicago, IL 60612 USA
Peterson, Alicia
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Sufit, Robert
Hinchcliff, Monique E.
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机构:Northwestern Univ, Div Rheumatol, Feinberg Sch Med, Chicago, IL 60612 USA
Hinchcliff, Monique E.
Mahoney, J. Matthew
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机构:
Dartmouth Coll, Hitchcock Med Ctr, Dartmouth Med Sch, Hanover, NH 03756 USANorthwestern Univ, Div Rheumatol, Feinberg Sch Med, Chicago, IL 60612 USA
Mahoney, J. Matthew
[2
]
Wood, Tammara A.
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机构:
Dartmouth Coll, Hitchcock Med Ctr, Dartmouth Med Sch, Hanover, NH 03756 USANorthwestern Univ, Div Rheumatol, Feinberg Sch Med, Chicago, IL 60612 USA
Wood, Tammara A.
[2
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Miller, Frederick W.
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NIEHS, NIH, Bethesda, MD USANorthwestern Univ, Div Rheumatol, Feinberg Sch Med, Chicago, IL 60612 USA
Miller, Frederick W.
[3
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Whitfield, Michael L.
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Dartmouth Coll, Hitchcock Med Ctr, Dartmouth Med Sch, Hanover, NH 03756 USANorthwestern Univ, Div Rheumatol, Feinberg Sch Med, Chicago, IL 60612 USA
Whitfield, Michael L.
[2
]
Varga, John
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Northwestern Univ, Div Rheumatol, Feinberg Sch Med, Chicago, IL 60612 USANorthwestern Univ, Div Rheumatol, Feinberg Sch Med, Chicago, IL 60612 USA
Varga, John
[1
]
机构:
[1] Northwestern Univ, Div Rheumatol, Feinberg Sch Med, Chicago, IL 60612 USA
[2] Dartmouth Coll, Hitchcock Med Ctr, Dartmouth Med Sch, Hanover, NH 03756 USA
Eosinophilia-myalgia syndrome (EMS) is characterized by subacute onset of myalgias and peripheral eosinophilia, followed by chronic neuropathy and skin induration. An epidemic of EMS in 1989 was linked to consumption of L-tryptophan that had originated from a single source. Following the ban by the Food and Drug Administration (FDA) on the sale of L-tryptophan, the incidence of EMS declined rapidly. Moreover, no new cases have been described since the FDA ban was lifted in 2005. We report the clinical, histopathologic, and immunogenetic features of a new case of L-tryptophan-associated EMS, along with evidence of activated transforming growth factor beta and interleukin-4 signaling in the lesional skin.