Indian Dermatology Online Journal

: 2019  |  Volume : 10  |  Issue : 6  |  Page : 721--723

Pustular vasculitis: Different names for same entity?

Shivani B Kaushik1, Animesh A Upadhyay2, Ethan Routt1, Robert Phelps1,  
1 Department of Dermatology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
2 Intern, Department of Dermatology, Maharashtra University of Health Sciences, Mumbai, Maharashtra, India

Correspondence Address:
Animesh A Upadhyay
03/Vasuki, Sector 2, Srishti Complex, Mira Road East, Thane - 401 107, Maharashtra

How to cite this article:
Kaushik SB, Upadhyay AA, Routt E, Phelps R. Pustular vasculitis: Different names for same entity?.Indian Dermatol Online J 2019;10:721-723

How to cite this URL:
Kaushik SB, Upadhyay AA, Routt E, Phelps R. Pustular vasculitis: Different names for same entity?. Indian Dermatol Online J [serial online] 2019 [cited 2022 Jan 20 ];10:721-723
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Classic leukocytoclastic vasculitis presenting as palpable purpura is a commonly encountered entity in dermatology. Here, we report a case of pustular leukocytoclastic vasculitis which is a relatively rare clinical presentation with only a few cases reported in the literature. Clinically, it predominantly presents on acral sites as pustules or bullae on a purpuric base. Several terms in the literature have been used in the past to describe pustular vasculitis, and here we briefly review the introduction and evolution of this case.

Pustular vasculitis is a rare clinical entity which was first reported by Jorizzo et al. in 1983. Clinically, it is characterized by pustules or pustular-plaques on a purpuric base and histologically depict features of leukocytoclastic vasculitis.[1] It is commonly misdiagnosed and often treated as an infectious process. Alternative diagnoses are considered only when the patient fails to respond to antibiotics. Here, we report a case of classic pustular vasculitis along with a brief review of evolution of this distinct entity.

A 64-year-old male presented to the Mount Sinai Hospital in New York with the chief complaint of bilateral lower extremity pain for 3 days and multiple painful fluid-filled lesions on the legs of 1-day duration. His past medical history was significant for hepatitis C-induced liver cirrhosis, HIV, end-stage renal disease, hypertension, and deep vein thrombosis (DVT). His medications included rifaximin, ant-retroviral treatment (Darunavir, Dolutegravir, Ritonavir), nadolol, lactulose, sucralfate, and lisinopril. In addition, he was on hemodialysis for end-stage renal disease, and had an IVC filter for DVT. He had fever (100.4°F) and diffuse polyarthralgias, with no other systemic symptoms, recent travel, or new medications. There was no history of similar lesions in the past. He smoked 10 cigarettes/day for >30 years but denied alcohol or illicit drug use. His family history was not medically relevant. On physical examination, multiple pustules and bullae with turbid fluid were noted on a purpuric base on bilateral lower legs [Figure 1]. No oral or genital involvement was noted. His systemic examination was unremarkable. His basic work up was significant for anemia, thrombocytopenia, deranged liver and kidney function tests owing to his cirrhosis, and end-stage renal disease. His viral load was undetectable and CD4 count was 153/μl. Wound and blood cultures were negative for bacteria, virus, or fungi. Doppler ultrasound was negative for any deep venous thrombosis.{Figure 1}

Two skin biopsies were performed from the lesional and peri-lesional skin for histopathology and direct immunofluorescence testing (DIF) testing, respectively. Skin biopsy was noted to have perivascular mixed infiltrate of mononuclear cells, neutrophils with focal fragmentation of their nuclei, and extravasated erythrocytes. The endothelial cells were swollen and demonstrated fibrin in their walls. DIF showed granular perivascular deposition of C3 and fibrinogen; sparse granular perivascular deposits of IgG were seen without any significant deposition of IgM or IgA. Based on these findings, a diagnosis of pustular leukocytoclastic vasculitis was made. Because there was no evidence of systemic vasculitis in our patient, he was managed with supportive care and all his lesions resolved by the end of 2 weeks. The trigger for his acute outbreak remains unclear [Figure 2], [Figure 3], [Figure 4].{Figure 2}{Figure 3}{Figure 4}

Various terms have been used in the literature to describe conditions that are clinically characterized by pustular acral lesions and histologically by a neutrophilic infiltrate with or without features of vascular damage. Jorizzo et al. introduced the term pustular vasculitis in 1983, describing a group of conditions that exhibited overlapping histologic changes of Sweet's syndrome and leukocytoclastic vasculitis. In their review, they use the term pustular vasculitis to include Behcet's syndrome, gonococcal dermatosis-arthritis-syndrome, bowel-associated dermatosis-arthritis-syndrome, and chronic meningococcemia.[1],[2],[3] Thereafter, McNeely et al. described an entity called primary idiopathic pustular vasculitis.[4] There are reports of another condition called acute generalized pustular bacterid which presents as a single episode of pustular vasculitis following streptococcal upper respiratory tract infections.[5],[6] In 1995, Strutton et al. described six patients with symmetric lesions on bilateral hands. Clinically, these lesions resembled Sweet's syndrome but biopsy specimens showed severe leukocytoclastic vasculitis.[7] They called it a distinct entity termed as pustular vasculitis of the hands. This was followed by reports of clinically similar lesions on the hands, but they lacked evidence of vasculitis on histology, which led to the introduction of the term neutrophilic dermatosis of the dorsal hands.[8],[9],[10] Later in 2004, Weenig et al. excluded the word dorsal from the term as they observed several patients with pustular lesions involving the palmar aspect of hands as well and termed it neutrophilic dermatosis of the hands.[11] Pustular lesions with purpuric base on the legs were described by Selvan et al.[12] Most recently, the term acral Sweet's syndrome has been used to describe similar lesions.[13]

Another interesting case report by Lazarov et al. described a patient with disseminated pustular eruption compatible with pustular vasculitis and concomitant bullous lesions along with the features of superficial bullous pyoderma gangrenosum during an exacerbation of ulcerative colitis. The authors suggested that pustular vasculitis is another skin manifestation of ulcerative colitis.

All the entities described above have common clinical features of pustules on purpuric bases, pustular plaques, or bullous lesions and histological features of neutrophilic dermatosis with or without features of leukocytoclastic vasculitis. Occurrence of these lesions on both hands and feet have been described in the literature. Skin biopsy is imperative in making the diagnosis. The term neutrophilic dermatoses is preferred if there is no histological evidence of vasculitis, however, it should be diagnosed as pustular vasculitis if there are signs of vessel damage in addition to features of neutrophilic dermatoses.[4],[14],[15] Controversy remains whether pustular vasculitis is a variant of neutrophilic dermatoses, but it can be concluded that these various designations represent similar conditions. Our case represents idiopathic pustular leukocytoclastic vasculitis, and we think it is important to familiarize readers with this entity and the different terms used to describe it as they can be confusing and often lead to misdiagnosis.

Declaration of patient consent

The authors certify that they have obtained all appropriate patient consent forms. In the form the patient(s) has/have given his/her/their consent for his/her/their images and other clinical information to be reported in the journal. The patients understand that their names and initials will not be published and due efforts will be made to conceal their identity, but anonymity cannot be guaranteed.

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Conflicts of interest

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