Seabather's eruption presents Koebner phenomenon?

Abstract

erythematous plaques as in the two reported cases. Larvae with 0.2-0.5 mm in diameter are found in the water columns and penetrate the areas covered by bathing suits, including neoprene clothes, seeking shelter to metamorphose. 1-8 The fabrics of the clothes act as a filter draining the water with the trapping and disruption of the planulae against the skin activating its defence cells (cnidocytes). The toxins cause erythematous and pruriginous papules in coert areas of the body. Children are more affected than adults by staying longer in the sea.Koebner Phenomenon was described in 1871 by Heinrich Koebner in a patient with the development of psoriatic plaques in areas of multiple trauma. 10 Isomorphic phenomenon or KP can be triggered by several factors, especially trauma, and is reported in various dermatoses. 10 In this series, the linear distribution of erythematous papules resembles KP. These linear lesions are unlikely to occur at random, or by linear contact of the planulae with the skin. It is more likely that the papules with linear distribution appeared during or after the scratching and were triggered by trauma. We conclude that the observations support the inclusion of SBE in the list of KP triggering diseases.

Seabather’s eruption: description of a new clinical manifestation

“…1 KP was recently described in SBE, showing linear papules in the nail paths triggered by trauma after patients scratch the lesions. 1 In the present cases, the lesions are compatible with KP, but papules appeared with linear and short paths during sea baths and were not triggered by scratching, suggesting possible contacts with polyps full of planula-like particles.…”

“…aquila and, rarely, the sea anemone Edwardsiella lineata. 1,2 It is manifested by erythematous and itchy papules located often in areas covered by bathing suits during or immediately after exposure to sea water. [1][2][3][4][5][6][7] We report two cases of SBE mimicking Koebner Phenomenon (KP) as envenomations caused by the hydromedusa Olindias sambaquiensis and the scyphomedusa Chrysaora lactea, some of the most common jellyfish species in S and SE Brazil.…”

“…Seabather's eruption is caused by L. unguiculata in Brazil, being frequent in the area. 1,3 The knowledge about the dermatitis is not widely disseminated and diagnostic confusions with dermatophytoses and parasitic infestations such as scabies and larva migrans were recently reported. 3 Skin lesions are different according to forms of the life cycle of L. unguiculata (ephyra, adult jellyfish and larvae).…”

“…[1][2][3][4] The contacts or macerations of ephyra and adult medusae cause erythematous plaques according to their rounded shapes with sizes of 20-50 mm. [1][2][3][4] Most envenomations are caused by planula larvae (2-5 mm) found in the water column and when imprisoned, especially under areas covered by bathing suits, they break off activating the cnidocytes with toxins causing irregularly distributed erythematous papules. [1][2][3][4] The polyps (1.8-12 mm) ( Fig.…”

“…[1][2][3][4] Most envenomations are caused by planula larvae (2-5 mm) found in the water column and when imprisoned, especially under areas covered by bathing suits, they break off activating the cnidocytes with toxins causing irregularly distributed erythematous papules. [1][2][3][4] The polyps (1.8-12 mm) ( Fig. 2d) can produce asexually planula-like particles (planuloids) ( Fig.…”