eMedicine Specialties > Dermatology > Diseases of the Adnexa
Neutrophilic Eccrine Hidradenitis
Updated: Aug 31, 2009
Introduction
Background
Neutrophilic eccrine hidradenitis (NEH) was initially described in acute myelogenous leukemia (AML) patients undergoing chemotherapy.1 Neutrophilic eccrine hidradenitis has since been reported in persons with various neoplastic and nonneoplastic conditions and in otherwise healthy individuals; however, most documented cases have continued to be observed in the setting of AML, usually in association with chemotherapy; the name toxic erythema of chemotherapy has been proposed.2 Patients with this uncommon, self-limited condition usually present with fever and nonspecific cutaneous lesions. A skin biopsy specimen demonstrating characteristic pathologic changes of the eccrine glands is required to confirm a diagnosis of neutrophilic eccrine hidradenitis.
Also see the eMedicine articles Acute Myelogenous Leukemia and Chronic Myelogenous Leukemia.
Pathophysiology
The mechanism(s) of neutrophilic eccrine hidradenitis is unknown, although neutrophilic eccrine hidradenitis pathologic changes observed with intradermal bleomycin injections support a direct toxic effect of chemotherapy. More than 70% of oncology patients who develop neutrophilic eccrine hidradenitis do so after their first course of chemotherapy.3 Cases linked to chemotherapeutic agents have developed at a wide range of 2 days to 2 years after initiation. Some patients experience recurrences of the cutaneous eruption upon reintroduction of the chemotherapeutic regimens. A diagnosis of toxic erythema of chemotherapy has been proposed for this group of disorders, to emphasize the overlapping clinical and histological features with similar eruptions.2
Reports of neutrophilic eccrine hidradenitis heralding the onset of both AML4 and chronic myelogenous leukemia,5 the relapse of AML,6 and being induced by granulocyte colony-stimulating factor7 suggest that the condition is in the spectrum of other neutrophilic dermatoses that have been observed in patients with cancer: erythema elevatum diutinum, intraepidermal immunoglobulin A (IgA) pustulosis, pyoderma gangrenosum, subcorneal pustular dermatosis, Sweet syndrome (and it localized variant, neutrophilic dermatosis/pustular vasculitis of the dorsal hand), and vasculitis. The inflammatory infiltrate of mature polymorphonuclear leukocytes is the unifying characteristic of this group of conditions.3
Cases of neutrophilic eccrine hidradenitis in otherwise healthy individuals,8 with acetaminophen use,9 with cyclophosphamide therapy for lupus,10 with methotrexate use for actinic reticuloid syndrome,11 in Behçet disease,12 and in infections (HIV, Serratia, Enterobacter, Nocardia, Staphylococcus, Streptococcus, Pseudomonas) suggest it could simply be an altered inflammatory response to nonspecific stimuli. Neutrophilic eccrine hidradenitis in young children may be triggered by thermal damage of eccrine glands.13
Frequency
International
The frequency of neutrophilic eccrine hidradenitis is unknown.
Mortality/Morbidity
Neutrophilic eccrine hidradenitis is typically a self-limited process. It does not appear to portend a worse prognosis for the underlying malignancy when occurring in that setting.
Sex
A slight male predominance is found in cases of neutrophilic eccrine hidradenitis.14
Age
Neutrophilic eccrine hidradenitis has been reported in individuals as young as 6 months and as old as 79 years.
Clinical
History
Most reported cases of neutrophilic eccrine hidradenitis (NEH) have been in patients with AML who are undergoing chemotherapy, frequently with cytarabine. Granulocytopenia may be found in such cases. Other malignancy and chemotherapy associations exist. As noted previously, cases have been documented in AML and chronic myelogenous leukemia patients who were not on chemotherapy. Some otherwise healthy individuals have inexplicably developed biopsy-proven lesions of neutrophilic eccrine hidradenitis. Regardless of the clinical setting, patients with neutrophilic eccrine hidradenitis develop skin lesions and frequently report fever. Half of the patients are asymptomatic, but pain and tenderness are not uncommon.
Physical
The cutaneous lesions of neutrophilic eccrine hidradenitis are protean. Neutrophilic eccrine hidradenitis lesions may be solitary or multiple. Erythematous or purpuric macules, papules, nodules, or plaques are described most frequently. Hyperpigmented plaques, annular lesions,15 and sclerodermoid changes16 have also been noted. Tenderness may be elicited. The trunk or limbs are most often involved. Neutrophilic eccrine hidradenitis simulating orbital cellulitis,17 facial cellulitis,18 and symmetrical ear swelling19 have been documented.
Causes
The cause of neutrophilic eccrine hidradenitis is unknown. A direct toxic effect of chemotherapy and a paraneoplastic mechanism have both been proposed to explain neutrophilic eccrine hidradenitis in the context of malignancy. Cases of neutrophilic eccrine hidradenitis resolving after withdrawal of chemotherapy and recurring upon reinstitution of the same regimen favor the former. Also supporting a direct toxic drug response is a study showing that the intradermal injection of bleomycin can yield local neutrophilic eccrine hidradenitis changes.20 However, skin lesions arising after chemotherapy have developed anywhere from 2 days to 2 years later. A diagnosis of toxic erythema of chemotherapy has been proposed for this group of disorders, to emphasize the overlapping clinical and histologic features with similar eruptions.2
Favoring a paraneoplastic process are case reports of neutrophilic eccrine hidradenitis heralding the onset of both AML4 and chronic myelogenous leukemia5 and the relapse of AML.6 Neutrophilic eccrine hidradenitis has also been observed in otherwise healthy individuals8 ; in Behçet disease12 ; with acetaminophen9 ; with granulocyte colony-stimulating factor7 ; with cyclophosphamide therapy for lupus10 ; with methotrexate therapy for actinic reticuloid11 ; and with HIV, Serratia, Enterobacter, Nocardia, Staphylococcus, Streptococcus, and Pseudomonas infections.
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References
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Bardenstein DS, Haluschak J, Gerson S, Zaim MT. Neutrophilic eccrine hidradenitis simulating orbital cellulitis. Arch Ophthalmol. Nov 1994;112(11):1460-3. [Medline].
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Belot V, Perrinaud A, Corven C, de Muret A, Lorette G, Machet L. [Adult idiopathic neutrophilic eccrine hidradenitis treated with colchicine]. Presse Med. Oct 2006;35(10 Pt 1):1475-8. [Medline].
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Antonovich DD, Berke A, Grant-Kels JM, Fung M. Infectious eccrine hidradenitis caused by Nocardia. J Am Acad Dermatol. Feb 2004;50(2):315-8. [Medline].
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Further Reading
Keywords
neutrophilic eccrine hidradenitis, NEH, acute myelogenous leukemia, AML, chemotherapy-associated eccrine hidradenitis, drug-associated eccrine hidradenitis, infectious eccrine hidradenitis, neutrophilic dermatoses, chemotherapy, intradermal bleomycin injections, Sweet syndrome, atypical pyoderma gangrenosum, toxic erythema of chemotherapy, eccrine squamous syringometaplasia, idiopathic palmoplantar eccrine hidradenitis


Overview: Neutrophilic Eccrine Hidradenitis