Photosensitivity associated with selective serotonin reuptake inhibitors.

Selective serotonin reuptake inhibitors (SSRIs) are a widely prescribed group of antidepressants. We report three cases of photosensitivity induced by fluvoxamine and paroxetine. These photoallergic reactions suggest cross-reactivity between different molecules. Methylation metabolism could explain common photosensitization. Although these drugs are widely prescribed, such photosensitization is rare. Nevertheless, we consider that clinicians and patients should be aware of the risk of photosensitization and these drugs should be stopped before phototherapy or prolonged sun exposure.

[The value of photodynamic therapy in the treatment of Bowen's disease]. / Intérêt de la photothérapie dynamique topique dans la prise en charge de la maladie de Bowen.

BACKGROUND: While the standard treatments for Bowen's disease (BD) (surgery, cryotherapy and antimitotic agents) are efficient, they are associated with extensive scarring. In this paper we confirm that photodynamic therapy using topical aminolevulinic acid provides effective treatment for this disease. PATIENTS AND METHODS: Twenty-two patients with a total of 38 cases of BD were included in this retrospective single-centre study between 2001 and 2006. They were treated with photodynamic therapy using topical aminolevulinic acid (Metvix. The study criteria consisted of patient age and gender, site and area of lesions, number of patients with multiple patches of BD and/or large lesions, tolerance of the treatment, clinical response and quality of wound healing at 3, 6 and 12 months. Annual follow-up was conducted for five years. The probability of remission up to 60 months after treatment was determined by means of survival analysis based on the variable-interval actuarial method. RESULTS: Seven men and 15 women of median age: 76 years (interquartile range: [69-82]) with 38 cases of Bowen's diseases were treated with photodynamic therapy. In terms of frequency, lesions were seen predominantly on the lower limbs (N=24) and face (N=10). Other lesions were seen on the trunk or back (N=4). The mean surface area of lesions was 8.62 cm2 (1-96 cm2). Eight patients were presenting multiple patches of BD (> or = three lesions), and large lesions were noted in 11 cases. The most common adverse effect was an immediate burning sensation, described by 32% of patients (n=7). Treatment was effective, with remission being achieved in all patients at 3 months of follow-up. Wound healing was optimal and without atrophy or cosmetic sequelae. The remission rate was 100% at 6 months, 95% at 12 months and 85% at 24 months. DISCUSSION: This open retrospective study confirmed the good efficacy of photodynamic therapy in the treatment of BD in terms of both clinical remission and cosmetic results. It enables easier treatment of large and/or multiple lesions than surgery. It is more suitable for elderly patients than either topical anticancer drugs, which require prolonged compliance, or surgery and cryotherapy, both of which result in slow-healing postoperative wounds. CONCLUSION: Since photodynamic therapy is a very costly therapeutic method, we feel that dynamic phototherapy should be used only for large and/or multifocal lesions or for lesions of the lower limbs in patients with chronic venous insufficiency.

[Radiation induced skin reactions]. / Réactions cutanées induites par la radiothérapie.

Radiotherapy is one of the most important treatment modality of cancers. Skin secondary effects are well known. Cutaneous complications are described. Physiopathogenic mechanisms are reported. Many preventative and treatment options have been used with varying degrees of evidence of success. Information of patients, further research studies and a multidisciplinary approach are necessary to increase the management of radiation induced skin reactions.

[Methicilline-sensitive and methicilline-resistant Staphylococcus aureus related morbidity in chronic wounds: a prospective study]. / Etude prospective comparative de la morbidité des Staphylococcus aureus métisensibles et métirésistants dans les plaies chroniques.

OBJECTIVE: Staphylococcus aureus is the most common bacteria responsible for cutaneous infections. Its capacity to adapt has led to the selection of methicilline-resistant strains (MRSA). These strains create specific problems in their management in dermatology (mode of contamination, treatment, added costs, increased nosocomial risks). The objective of our study was to search for morbidity of MRSA in chronic cutaneous wounds in hospital settings and assess the need of systemic antibiotic therapy. PATIENTS AND METHODS: We have conducted a one-year prospective study. All the patients hospitalized in the department with leg ulcers or foot wounds were included. Following local sampling for bacteriological examination, three groups were constituted: methicilline-sensitive patients with staphylococcus aureus (MSSA), methicilline-resistant staphylococcus aureus patients and patients in whom these bacteria were absent. Only the first two groups were compared after studying the past history, clinical description of the wound at the start of the study, results of the infectious bacteriology and of the clinical and bacteriological evolution of the wounds. RESULTS: The two groups studied were similar in number, past history, clinical aspect and therapeutic management. Only malnutrition was more frequent in patients exhibiting MRSA. There was no difference with the evolution of the wounds. CONCLUSION: Our study did not reveal any difference in the morbidity of staphylococcus aureus in the cutaneous wounds whether methicilline sensitive or resistant. Systematic antibiotherapy is not justified in the absence of signs of infection.

[Methi-resistant Staphylococcus aureus in dermatological practice: origin, risk factors and outcome]. / Staphylococcus aureus métirésistant en dermatologie.

BACKGROUND: Increased frequency of methiresistant Staphylococcus aureus (MRSA) in inpatients is a day to day problem. OBJECTIVE: To determine the origin of MRSA, the causes for contamination, and potential complications in a department of Dermatology. PATIENTS AND METHODS: A retrospective study of patients hospitalized in a dermatology department with cutaneous MRSA during 1997-1998. We considered age, type and duration of dermatitis, geographic origin of patients on admission, previous hospitalizations, time between arrival in the ward and positive MRSA, and complications requiring systemic antibiotics. RESULTS: Out of 4579 of our patients, 53 (0.011 p. 100) had positive MRSA. They were on average 70.86 years-old (26 to 97). The most common underlying dermatitis was leg ulcers (30) and foot sores (4). Dermatitis had lasted for more than 1 month in 48 patients. Most of the patients (40) had their MRSA on admission to our ward. Twenty six patients admitted from home had MRSA; only 9 had never been in an hospital. Six patients had diabetes mellitus. Thirty two patients healed with local treatment for their dermatitis. Thirteen patients have had some complications (erysipela 1, osteoarthritis 3, septicemia 2, febrile syndrome 9). DISCUSSION: Most patients with MRSA had leg ulcers or foot sores, confirming liability of chronic wounds to MRSA colonizing. Thirty one out of 40 patients with MRSA at arrival had been previously hospitalized. Hospitalization increases the risk of MRSA contamination. Treatment of MRSA is essentially that of the underlying dermatitis. However, it is still necessary to monitor the lesion for complications.

[Hydroxychloroquine-puvatherapy photoinduced acute generalized exanthematous pustulosis]. / Pustulose exanthématique aiguë généralisée photodéclenchée par l'association hydroxychloroquine-puvathérapie.

INTRODUCTION: Acute generalized exanthematous pustulosis usually occurs as a typical skin reaction to drugs. We observed a case with a photodistribution induced by hydroxychloroquine and/or PUVA. CASE REPORT: A male subject had been treated for actinic pseudolymphoma since 1988. General corticosteroids had been given initially and were followed by PUVA and azathioprine. A new episode with erythema involving the trunk and the proximal portion of the limbs was treated with corticosteroids and hydroxychloroquine. The symptomatology regressed but pustular erythema developed in exposed areas two days after a PUVA session on the upper part of the body. The eruption did not involve the zones of the phototests one month earlier. The lesions resolved rapidly after withdrawal of hydroxychloroquine and PUVA. DISCUSSION: Photo-induced acute generalized exanthematous pustulosis with a photodistribution has not been reported previously. The imputability of hydroxychloroquine and PUVA, and their association is suggested. The appearance of pustular lesion on exposed areas and the protection resulting from the phototests would lead to several hypotheses. General corticosteroids were ineffective in preventing and in treating acute generalized exanthematous pustulosis.

Psoralen plus ultraviolet A in the prophylactic treatment of benign summer light eruption.

We report the results of a French multicentre study to evaluate the efficiency of psoralen plus ultraviolet A (PUVA) therapy in the prophylactic treatment of benign summer light eruption (BSLE) and to establish the optimal protocol of radiation. Nine photobiology centres took part in this study; 83 patients (76 of them women) were evaluated. The radiation protocols were as follows: oral psoralen (8-methoxypsoralen; 0.6 mg/kg) was taken at each session; the starting dose of UVA radiation was determined according to skin type, with increments of 0.5 J/cm2 every 2 sessions. The subjects were randomized to receive 10-20 sessions 3 times per week. PUVA therapy was very effective: 68 patients (82%) reported total protection from BSLE. Four patients (5%) showed progress. Only 13% showed no improvement. The satisfactory results were not correlated with either the number of sessions or the J/cm2 of UVA. The intensity of tanning after the PUVA sessions did not appear to predict cure. Thirty-six percent of the patients had adverse reactions to treatment, including erythema, pruritus and triggering of BSLE. However, these effects only required the treatment to be stopped in 2% of the cases (for severe pruritus). The results in the various centres were similar.