Mefloquine, which has previously been used to treat and prevent malaria, was recognised in 2008–2009 to be effective against Schistosoma.Historically, antimony potassium tartrate remained the treatment of choice for schistosomiasis until the development of praziquantel in the 1980s.Post-treatment monitoring
Osteopontin (OPN)  is a promising tool for monitoring Praziquantel efficacy and post-treatment fibrosis regression as (OPN) expression is modulated by Schistosoma mansoni egg antigens and its levels correlate with severity of schistosomiasis fibrosis and portal hypertension in mice and humans. Praziquantel (PZQ) pharmacotherapy reduces systemic OPN levels and liver collagen content in mice. Epidemiology
The disease is found in tropical countries in Africa, the Caribbean, eastern South America, Southeast Asia, and the Middle East. S. mansoni is found in parts of South America and the Caribbean, Africa, and the Middle East; S. haematobium in Africa and the Middle East; and S. japonicum in the Far East. S. mekongi and S. intercalatum are found locally in Southeast Asia and central West Africa, respectively.The disease is endemic in about 75 developing countries and mainly affects people living in rural agricultural and peri-urban areas. Infection estimates
In 2010, approximately 238 million people were infected with schistosomiasis, 85 percent of whom live in Africa. An earlier estimate from 2006 had put the figure at 200 million people infected. As of the latest WHO record, 236.6 million people were infected in 2019. In many of the affected areas, schistosomiasis infects a large proportion of children under 14 years of age.
The first time a non-sensitized person is exposed, the rashes are usually mild with an associated prickling sensation that quickly disappear on its own since this is a type of hypersensitivity reaction. In sensitized people who have previously been infected, the rash can develop into itchy, red, raised lesions (papules) with some turning into fluid-filled lesions (vesicles). Previous infections with cercariae causes a faster developing and worse presentation of dermatitis due to the stronger immune response. The round bumps are usually one to three centimeters across. Because people living in affected areas have often been repeatedly exposed, acute reactions are more common in tourists and migrants. The rash can occur between the first few hours and a week after exposure, and they normally resolve on their own in around 7–10 days. For human schistosomiasis, A similar type of dermatitis called "swimmers itch" can also be caused by cercariae from animal trematodes that often infect birds. Cercarial dermatitis is not contagious and can not be transmitted from person-to-person.Symptoms may include:

Flat, red rash
Small red, raised pimples
Small red blisters
Prickling or tingling sensation, burning, itching of the skinScratching the rash can lead to secondary bacterial infection of the skin, thus it is important to refrain from scratching. Some common treatments for itching include corticosteroid cream, anti-itch lotion, application of cool compresses to rash, bathing in Epsom salts or baking soda, and in severe itching cases, prescription strength cream and lotions. Oral antihistamines can also help relieve the itching.