The most effective current management strategies for delusional infestations include empathetic history-taking and active listening to the patient; careful exclusion of true parasitoses, such as mite infestations and cercarial dermatitis
, and neurodegenerative or cerebrovascular disorders; and a therapeutic regimen that includes a second-generation neuroleptic agent.
in focus: schistosomes in the Czech Republic.
Schistosomal cercarial dermatitis occurs worldwide with cases reported from every continent except Antarctica.
The syndrome caused by cercarial penetration of skin is called schistosome cercarial dermatitis (also called swimmer's itch or paddy field dermatitis).
Schistosome cercarial dermatitis can be treated symptomatically with corticosteroid cream or calamine lotion, applying cool compresses to the affected areas, and bathing in epson salts, baking soda, or oatmeal.
Their morphology was consistent with Microbilharzia variglandis, an avian schistosome implicated as a causative agent of cercarial dermatitis.
This sensitization phenomenon explains the wide range of incubation periods reported in cercarial dermatitis outbreaks (1 ).
We document an outbreak of human cercarial dermatitis in San Francisco Bay that was related to the recent introduction of an exotic snail, the Japanese bubble snail Haminoea japonica Pilsbury 1895 (Cephalaspidea: Haminoeidae), which serves as the intermediate host of a schistosome that is responsible for the now annual dermatitis outbreaks.
Cercarial dermatitis (swimmer's itch) is caused by penetration of human skin with cercariae of schistosome parasites; the condition is common and recurrent in freshwater habitats worldwide.
Clinical characteristics of patients with acute schistosomiasis acquired in Laos compared with those of case-patients from Tanzania * Infections Infections among acquired in case-patients in Clinical characteristic Laos, n = 7 Tanzania, n = 19 Fever 6 (86) 13 (68) Headache 6 (86) ([dagger]) 2 (10) Urticaria 5 (71) 7 (37) Cough 5 (71) 15 (78) Fatigue 4 (57) 11 (58) Angioedema 3 (42) 2 (10) Abdominal pain 3 (42) 5 (26) Diarrhea 2 (28) 7 (37) Myalgia 2 (28) 7 (37) Cercarial dermatitis
1 (14) 3 (16) Time from exposure to seeking 27 ([+ or -]4) 38 ([+ or -]22) medical care, d ([+ or -]SD) Eosinophil count, cells/mm 3,595 3,535 ([+ or -]SD) ([+ or -]3,218) ([+ or -]2,394) * Patients with cases suspected to be caused by Schistosoma mekongi infection compared with patients infected with S.