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Eastern Mediterranean Health Journal |
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Volume 13 No. 2 March - April , 2007 |
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Case report
Panuveitis and dermal vasculitis following MMR vaccination
M. Sedaghat,1 S. Zarei-Ghanavati,1 S. Shokoohi1 and A. Ghasemi2
1Khatam-Al-Anbia Eye Hospital, Mashad University of Medical Sciences, Mashhad, Islamic Republic of Iran (Correspondence to S. Zarei-Ghanavati: sizagh@yahoo.com).
2Ophthalmologist, Sabzevar, Islamic Republic of Iran.
Received: 22/05/05; accepted: 27/07/05
Introduction
Case report
The patient was referred to Khatam-al-Anbia Eye Centre 4 days after first hospitalization and hospitalized again. On review, the patient was suffering from fever (oral temperature = 39 ºC), generalized maculopapular skin rash and knee arthritis (Figure 1).

Biomicroscopy disclosed severe ciliary injection in both eyes with keratic precipitates and posterior synechiae; the anterior chamber had severe reaction with 1 mm hypopyon and a severe flare. Severe vitritis was also present. The intraocular pressure was 10 mmHg in the right eye and 8 mmHg in the left eye. In both eyes, fundus examination with dilated pupil showed blurred disk margins with multiple cream-coloured lesions, deep in the retina. By fluorescein angiography, multiple areas of hyperfluorescence with late leakage were revealed in the posterior pole (Figure 2).

Skin biopsy showed dermal vasculitis (Figure 3).

Blood count showed leukocytosis and neutrophilia. Her C reactive protein and erythrocyte sedimentation rate were moderately elevated. The patient had a negative protein purified derivative (PPD) and VDRL. Antinuclear antibodies, rheumatoid factor, HLA-B5 and HLA-B27 were also negative. She had normal chest and sacroiliac joint radiographs. Angiotensin-converting enzyme level was normal. Urine examination did not reveal any abnormal finding. The patient was diagnosed with bilateral panuveitis and was given intravenous methylprednisolone, 1 g/day, in addition to topical medication. After 3 days of therapy, the anterior chamber reaction was reduced significantly (2+ cells and flare with no hypopyon). Vitritis was also moderately reduced. Visual acuity had corrected to 3/10 level and the skin rash had resolved partially with faint pigmentation.
The patient was discharged with oral prednisolone 1 mg/day in addition to topical prednisolone acetate 1%, 4 times a day and cyclopentolate 1%, 4 times a day. After 10 days, oral prednisolone was gradually reduced and then discontinued. Regular follow-up and adjustment of the corticosteroid eye drops led to complete control of uveitis after 1 month. At follow-up 6 months later, the patient was free of cells and aqueous flare and she returned to a corrected vision of 10/10 in the right eye; however, the best corrected vision in the left eye was reduced to 6/10. By slit lamp examination of the left eye, iris atrophy, posterior synechiae and posterior capsular cataract were identified (Figure 4).

Examination of the right eye showed no significant change. Intraocular pressure in both eyes was within the normal limit. Fundoscopy of both eyes was normal in spite of a vitreous band without any traction on the retina in the left eye (Figure 5).

Discussion
Immunization: Initial immunization may play a role in uveitis irrespective of the etiologic factor. Based on this reality, several models of uveitis have been developed for experimental purposes [59]. Retinal S antigen induced uveitis [5,6,9], interphotoreceptor retinoid binding protein induced uveitis [7,9], lipopolysaccharide [10] and lipoteicoic acid [11] induced uveitis are examples of such experimental animal models. In all these models, initial immunization is essential to induce inflammation. During immunization viral antigen or tissue culture products may also initiate the early events in the immune activation pathway to induce uveitis by antigen mimicry.
Other toxins or antigens: Contamination of the vaccine with other toxins or antigens or modification of the vaccine due to faulty preservation may play a role in the induction of uveitis.
Coincidence: Although the possibility of mere coincidence cannot be excluded, no signs or symptom of other causes were detected at the onset and during the 6 months of follow-up. It should be added that the patient had negative PPD and VDRL, antinuclear antibodies, rheumatoid factor, HLA-B5 and HLA-B27.
Viral uveitis: It is possible that the live attenuated viruses of the MMR vaccine caused uveitis. Mild anterior uveitis has been seen in several systemic viral diseases such as measles, influenza and rubella [12] but we could not find any report of panuveitis.
The clinical data suggest that the vaccine was a precipitating factor. Acute posterior multifocal placoid pigment epitheliopathy following hepatitis B vaccine [13], anterior uveitis following varicella vaccine [14] and 2 cases of anterior uveitis 4 and 6 weeks after combined MMR vaccination [1] have been reported.
We searched MEDLINE from 1966 to 2005 and the bibliography lists from retrieved articles but we were unable to find a similar case, especially post-vaccination panuveitis. To our knowledge, therefore, this is the first report of such an association.
In conclusion, panuveitis and dermal vasculitis may occur following MMR vaccination. Although most cases of adverse reactions to vaccination are mild, in exceptional cases there may be serious consequences such as panuveitis or uveitis that may result in permanent sequelae and visual loss. Our observations call for ophthalmic awareness after MMR vaccination cases when ocular symptoms develop. In the future closer monitoring of all cases of vaccination, especially those in adolescents, is advocated since early therapy is obviously important.
References
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Regional conference
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