The effect on psoriasis of clobetasol propionate used alone or in combination with UVB

A study has been carried out to compare the effect of a combination of clobetasol propionate and UVB versus placebo/UVB. No significant reduction in time to healing was observed. However, symptoms abated more rapidly in the steroid/UVB group. Recurrences occurred at an earlier stage following the steroid UVB combination for long periods. A third group, treated solely with clobetasol propionate has also been investigated, but results were poorer than those described above. It is concluded that steroids in combination with UVB should be used only during the initial period in order to achieve a more rapid alleviation of symptoms and to avoid the side effects.