1. Vaidya DC, Schwartz RA. Prurigo nodularis: a benign dermatosis derived from a persistent pruritus. Acta Dermatovenerol Croat. 2008;16:38–44.
2. Lee MR, Shumack S. Prurigo nodularis: a review. Australas J Dermatol. 2005;46:211–8.
3. Bruni E, Caccialanza M, Piccinno R. Phototherapy of generalized prurigo nodularis. Clin Exp Dermatol. 2010;35:549–50.
4. Hammes S, Hermann J, Roos S, Ockenfels HM. UVB 308-nm excimer light and bath PUVA: combination therapy is very effective in the treatment of prurigo nodularis. JEADV. 2011;25:799–803.
5. Graham GF. Cryosurgery in treatment of acne and specific cutaneous neoplasia. In: Zacarian SA, editor. Cryosurgical advances in dermatology and tumors of the head and neck. Springfield: Charles C Thomas; 1977. p. 74–97.