RESUMEN
Lichen amyloidosis (LA) is a type of cutaneous amyloidosis characterized by brownish hyperkeratotic and itchy papules on the lower leg, back, forearm, or thigh. It is associated with itching and atopic dermatitis (AD) according to an etiopathogenetic mechanism that has not yet been fully elucidated. Currently, the available therapies for this condition include oral antihistamines, laser, cyclosporine, topical corticosteroids, and phototherapy, but, in light of the overlap with AD, Dupilumab may also be indicated. We report the case of a female, 52 years old, who had been suffering from AD and LA for about 27 years. She had lesions attributable to both diseases on the trunk and lower limbs associated with severe itching and had proved resistant to cyclosporine therapy. It was decided to opt for Dupilumab with the induction of 2 fl of 300 mg and maintenance with 1 fl every other week. The therapy proved to be effective, returning a total resolution of both diseases one year after the beginning of the treatment. Dupilumab demonstrated efficacy and safety in the LA related to AD and led to clinical and quality of life improvements in this patient. Therefore, Dupilumab should be considered when treating LA. Further studies should be conducted focusing on the efficacy of the drug on LA (whether or not related to AD), changes in the skin lesions after discontinuation, and the safety of long-term application.
RESUMEN
BACKGROUND: A calcipotriol (calcipotriene)/betamethasone dipropionate two-compound product has been shown to be efficacious for the treatment of psoriasis vulgaris. It is usually administered once daily for up to 4 weeks followed by treatment with corticosteroid-free conventional products (e.g. calcipotriol). The aim of this study was to evaluate the efficacy and tolerability of a 4-week treatment with the two-compound product in psoriasis vulgaris and the effects of sequential 8-week maintenance treatment with different calcipotriol formulations. METHODS: After an initial 4-week phase with the once-daily calcipotriol/betamethasone dipropionate two-compound product, adult patients with stable psoriasis vulgaris entered an 8-week maintenance phase and were allocated to one of the following treatments: calcipotriol ointment twice daily, calcipotriol cream twice daily, or calcipotriol cream once daily in the morning and calcipotriol ointment once daily in the evening. Clinical assessment was performed at baseline, after 4 weeks and after 12 weeks, and employed evaluation of the severity of pruritus using a scale from zero to four and the Psoriasis Area and Severity Index (PASI). RESULTS: After 4 weeks' treatment with the calcipotriol/betamethasone dipropionate two-compound product, a significant improvement in the severity of psoriasis was observed in all groups, with a mean reduction in the PASI of 71.3% (p < 0.001 vs baseline). A significant improvement in pruritus was also obtained after 4 weeks. These results were maintained after 8 weeks of treatment with calcipotriol, regardless of the formulation used. Treatment was very well tolerated and accepted by patients. On a scale ranging from poor to excellent, more patients treated with calcipotriol cream (49%) rated the acceptability of the treatment as excellent when compared with patients treated with the calcipotriol ointment (33%) or both calcipotriol formulations (36%). CONCLUSION: This study shows that the calcipotriol/betamethasone dipropionate two-compound product causes a rapid and marked improvement in both psoriasis lesions and pruritus. Our preliminary results suggest that the three calcipo- triol-based regimens are equally effective in maintaining the therapeutic results obtained with the calcipotriol/betamethasone dipropionate two-compound product and that the use of calcipotriol cream was the best accepted maintenance treatment.
