Tag Archives: pemphigus vulgaris

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We report a case of neutropenic ulceration in a 42-year-old woman receiving azathioprine for pemphigus vulgaris. She developed multiple indolent ulcers involving the nose, neck, and back, after about 6-8 weeks following commencement of azathioprine 50 mg daily. The ulcers were large, disfiguring, dry, and with basal necrotic slough. They were painless and did not discharge pus. The absolute neutrophil count was severely depressed initially, but normalized following azathioprine withdrawal. Swab culture revealed colonization with Klebsiella pneumoniae and the ulcers healed with local debridement, treatment with imipenem, and topical application of mupirocin. However, nasal disfigurement persisted. Neutropenic ulceration is known to be associated with azathioprine therapy but we report this case because of the unusual presentation-indolent cutaneous ulcers. Early recognition of the problem and drug withdrawal can prevent complications like disfigurement.

Neutropenia is characterized by an abnormally low number of neutrophils in the blood. Neutrophils normally comprise 45-75% of circulating white blood cells, and neutropenia is diagnosed when the absolute neutrophil count falls to <1500/ μL. Slowly developing neutropenia often goes undetected and is generally discovered when the patient develops sepsis or localized infections.

There are many causes of neutropenia, and immunosuppressants are a common iatrogenic cause. Azathioprine is an immunosuppressant drug that is being used for nearly 50 years now in organ transplantation and in diseases with suspected autoimmune etiology. Dermatologists use azathioprine as a steroid-sparing agent in various dermatoses such as psoriasis, immunobullous diseases, photodermatoses, and eczematous disorders. [1] The drug has been used in ulcerative autoimmune disorders such as Crohn’s disease and pyoderma gangrenosum. On the other hand, it has also been implicated as a cause of ulceration associated with neutropenia. [2] Most reports of neutropenic ulceration document involvement of the buccal mucosa and oral cavity.  We report a case of multiple severe cutaneous ulcers associated with long-term azathioprine use in a patient with pemphigus vulgaris.

Full article available at: http://www.ijp-online.com/article.asp?issn=0253-7613;year=2012;volume=44;issue=5;spage=646;epage=648;aulast=Laha

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Dichorionic diamniotic twins were born at 37 weeks of gestation by cesarean section to a 34-year-old primigravid Japanese woman because the first twin was in breech presentation. The mother had been diagnosed with pemphigus vulgaris prior to her pregnancy. In addition to a high antidesmoglein 3 autoantibody titer, flaccid bullae and erosions on both of the twins’ lips and in their oral cavities at 13 days of age led to the diagnosis of neonatal pemphigus vulgaris. This case highlights the need for awareness that pemphigus

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vulgaris may not occur immediately after birth.

http://onlinelibrary.wiley.com/doi/10.1111/j.1525-1470.2012.01828.x/abstract;jsessionid

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Associations between blood groups and several diseases are observed in the literature. Some of these have scientific support suggesting a rationale, statistical relation. The association between ABO groups with several malignancies, hypercholesterolemia, thrombosis, myocardial infarction, duodenal ulcer, infections, and autoimmune diseases is reported.  Pemphigus vulgaris (PV), a rare autoimmune, blistering disease, related to autoantibodies mainly directed to desmogleins, which lead to loss of keratinocyte adhesion.  The association between ABO groups and pemphigus has been proposed but not fully demonstrated. Shahkar et al., concluded the non-existent relationship between blood groups and the development of PV. The authors carried out a case-control study that showed there is no real association between blood groups and PV, in contrast to the work of Grob and Inderbitzin  and Altobella.  The authors determined that the presence of a particular blood group, in patients with the disease, does not vary significantly with “healthy” population distribution, which is very important because the relationship between blood groups and skin diseases has been controversial and not yet fully elucidated or explained clearly.

In 2007, Valikhani et al.,  showed not only that the ABO and Rhesus blood groups not have a particular distribution in the PV, other than the population, but no such relationship with any of the known variants of pemphigus, at least in Iran, suggesting the authors to conduct a study involving other areas of global demographic.

In Mexico, we conducted a similar study in a tertiary referral center for specialized dermatology consultation. We obtained the ABO and Rhesus blood groups of patients with PV in a period between January 2002 and October 2009, being our hospital a center that collects patients from different parts of Mexico and even South America.

We selected 70 charts of patients with PV. No differences in the presence of a particular blood group in patients with the disease were found (P=0.65). We sought to evaluate if any ABO group correlates with the clinical outcome (body surface area affected) of the patients studied. There were no positive or negative correlation between ABO groups and clinical outcome in PV (P=0.752)

We conclude, there is no association between ABO and Rhesus blood groups with PV, demonstrated by observing no differences between the presentations of a specific blood group in the disease. Moreover, there is no association between any ABO groups with the clinical outcome in PV.

Tirado-Sánchez A, Ponce-Olivera RM. Lack of relationship between blood groups and clinical outcome (body surface area affected) in patients with pemphigus vulgaris. Indian J Dermatol [serial online] 2012 [cited 2012 Sep 12];57:411-2. Available from: http://www.e-ijd.org/text.asp?2012/57/5/411/100513