In this study we have evaluated the use of blue light (peak at 415 nm) and a mixed blue and red light (peaks at 415 and 660 nm) in the treatment of acne vulgaris. One hundred and seven patients with mild to moderate acne vulgaris were randomized into four treatment groups: blue light, mixed blue and red light, cool white light and 5% benzoyl peroxide cream. Subjects in the phototherapy groups used portable light sources and irradiation was carried out daily for 15 min. Comparative assessment between the three light sources was made in an observer-blinded fashion, but this could not be achieved for the use of benzoyl peroxide. Assessments were performed every 4 weeks. After 12 weeks of active treatment a mean improvement of 76% (95% confidence interval 66-87) in inflammatory lesions was achieved by the combined blue-red light phototherapy; this was significantly superior to that achieved by blue light (at weeks 4 and 8 but not week 12), benzoyl peroxide (at weeks 8 and 12) or white light (at each assessment). The final mean improvement in comedones by using blue-red light was 58% (95% confidence interval 45-71), again better than that achieved by the other active treatments used, although the differences did not reach significant levels. We have found that phototherapy with mixed blue-red light, probably by combining antibacterial and anti-inflammatory action, is an effective means of treating acne vulgaris of mild to moderate severity, with no significant short-term adverse effects.

IPL significantly reduces erythema and telangiectasia of rosacea and this is sustained for at least 6 months.

We describe two Afro-Caribbean women who presented with pigmented Bowen's disease. One, a 44-year-old woman, developed a sharply demarcated, irregularly marginated, hyperpigmented plaque with a velvety surface in the perianal area. The other, a 25-year-old woman, developed a well defined, verrucous, hyperpigmented patch on the umbilicus. Histology showed that both cases were Bowen's disease, and subsequent treatment with 5-fluorouracil and cryotherapy led to complete resolution.

We describe a 29 year old Caucasian man who developed cutaneous sarcoidosis manifesting itself as a tumour at the left outer canthus clinically mimicking a basal cell carcinoma and nine tattoo granulomas. Subsequent investigation revealed that the patient was also suffering from systemic sarcoidosis.

We describe a 29 year old Caucasian man who developed cutaneous sarcoidosis manifesting itself as a tumour at the left outer canthus clinically mimicking a basal cell carcinoma and nine tattoo granulomas. Subsequent investigation revealed that the patient was also suffering from systemic sarcoidosis.