Herpes simplex virus type 1 corneal infection results in periocular disease by zosteriform spread.
(1/11)
In humans and animal models of herpes simplex virus infection, zosteriform skin lesions have been described which result from anterograde spread of the virus following invasion of the nervous system. Such routes of viral spread have not been fully examined following corneal infection, and the possible pathologic consequences of such spread are unknown. To investigate this, recombinant viruses expressing reporter genes were generated to quantify and correlate gene expression with replication in eyes, trigeminal ganglia, and periocular tissue. Reporter activity peaked in eyes 24 h postinfection and rapidly fell to background levels by 48 h despite the continued presence of viral titers. Reporter activity rose in the trigeminal ganglia at 60 h and peaked at 72 h, concomitant with the appearance and persistence of infectious virus. Virus was present in the periocular skin from 24 h despite the lack of significant reporter activity until 84 h postinfection. This detection of reporter activity was followed by the onset of periocular disease on day 4. Corneal infection with a thymidine kinase-deleted reporter virus displayed a similar profile of reporter activity and viral titer in the eyes, but little or no detectable activity was observed in trigeminal ganglia or periocular tissue. In addition, no periocular disease symptoms were observed. These findings demonstrate that viral infection of periocular tissue and subsequent disease development occurs by zosteriform spread from the cornea to the periocular tissue via the trigeminal ganglion rather than by direct spread from cornea to the periocular skin. Furthermore, clinical evidence is discussed suggesting that a similar mode of spreading and disease occurs in humans following primary ocular infection. (+info)
A case of granulomatous rosacea: sorting granulomatous rosacea from other granulomatous diseases that affect the face.
(2/11)
Granulomatous rosacea is a variant of rosacea that may present similar to other granulomatous diseases. We present the case of a 45-year-old woman with a 2-year history of facial erythema with multiple papules and pustules on the cheeks, chin, and glabella. The patient responded to minocycline, resulting in healing 6 months without residual scarring. This patient's clinical and histological presentation and treatment outcome are to our assessment consistent with granulomatous rosacea. However, other clinically and histologically related entities will be discussed. These entities include, but are not limited to, perioral dermatitis, granulomatous periorificial dermatitis, lupus miliaris disseminatus faciei, facial afro-caribbean eruption syndrome, and sarcoidosis. (+info)
Acneiform facial eruptions: a problem for young women.
(3/11)
OBJECTIVE: To summarize clinical recognition and current management strategies for four types of acneiform facial eruptions common in young women: acne vulgaris, rosacea, folliculitis, and perioral dermatitis. QUALITY OF EVIDENCE: Many randomized controlled trials (level I evidence) have studied treatments for acne vulgaris over the years. Treatment recommendations for rosacea, folliculitis, and perioral dermatitis are based predominantly on comparison and open-label studies (level II evidence) as well as expert opinion and consensus statements (level III evidence). MAIN MESSAGE: Young women with acneiform facial eruptions often present in primary care. Differentiating between morphologically similar conditions is often difficult. Accurate diagnosis is important because treatment approaches are different for each disease. CONCLUSION: Careful visual assessment with an appreciation for subtle morphologic differences and associated clinical factors will help with diagnosis of these common acneiform facial eruptions and lead to appropriate management. (+info)
Density of Demodex folliculorum in perioral dermatitis.
(4/11)
The role of Demodex folliculorum in perioral dermatitis is not satisfactory explained. Our purpose was to assess the density of D. folliculorum in perioral dermatitis and evaluate the relationship of the mite count to previous therapy with topical steroids. A standardized skin surface biopsy of the chin was performed in 82 female patients with perioral dermatitis and in 70 control female subjects. Patients who received previous topical steroid therapy had a significantly higher mite density than the patients who had received no topical steroids (p<0.001). In the latter group of patients, the mite density did not differ significantly from that of the control group (p=0.629). Mite density increased significantly with the length of treatment with topical steroids (p<0.001). Our results suggest that increased density of D. folliculorum in perioral dermatitis is a secondary phenomenon, associated with topical steroid therapy. (+info)
Perioral dermatitis after dental filling in a 12-year-old girl: involvement of cholinergic system in skin neuroinflammation?
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Granulomatous rosacea in infants. Report of three cases and discussion of the differential diagnosis.
(7/11)
Granulomatous rosacea is a variant of rosacea characterized by hard cutaneous papules and nodules in relatively normal-appearing skin that is rarely diagnosed in childhood. The differential diagnosis essentially includes perioral dermatitis and sarcoidosis. Despite the differences in clinical presentation and histopathology, there is similar responses to the same therapies used in rosacea. Therapeutic failure should lead to the investigation of other rare and controversial conditions, such as acne agminata. (+info)
Case report: Fluocinonide-induced perioral dermatitis in a patient with psoriasis.
(8/11)
Topical corticosteroids are the primary treatment for psoriasis. A patient with psoriasis being treated with topical fluocinonide for lesions on the extremities developed an erythematous facial eruption consistent with perioral dermatitis. When topical agents are applied, they often end up in unintended areas. The potential for drug-induced perioral dermatitis should be considered in psoriasis patients treated with potent topical corticosteroids. (+info)