Although we lack a wealth of clinical evidence about UVB treatment and the rare skin condition Nodular Prurigo we do at least have some experience and happy customers that have found phototherapy treatment at the 311nm narrowband level to be effective.

Erythematous granuloma annulare has responded dramatically to narrow-band therapy, he says. "I certainly have cleared people who have widespread granuloma annulare, and it certainly can be considered," although "I think UVA-1 is probably better," he said.

Of patients receiving nbUVB for psoriasis, 91% achieved a clear/near clear response after an average of 30 treatments.

A new research paper examines the role of vitamin D in reducing the risk of lung cancer, in particular, among patients with vitamin D deficiency. The meta-analysis of ten short-listed studies revealed a significant 5% reduction in the risk of lung cancer associated with each 10 nmol/L increase of vitamin D intake. The paper has been published in the Journal of Cancer Causes & Control and is part of DSM’s ongoing advocacy of the importance of vitamin D in maintaining adequate health and preventing conditions associated with its deficiency.

Does a lack of vitamin D put you at greater risk of multiple sclerosis?

There is unfortunately a lack of clinical evidence about the effectiveness of UVB treatment for Granuloma Annulare although we do at least have some customer feedback from our anonymous (and optional!!) customer surveys once per year.  Surveys are undertaken as a system to continually improve our business management and products - although in cases can also highlight the effectiveness of a treatment for rarer skin conditions such as Granuloma Annulare.