Complex sentence: Delusional parasitosis, or delusory parasitosis, also known as Ekbom's syndrome, is a form of psychosis whose victims acquire a strong delusional belief that they are infested with parasites, whereas in reality no such parasites are present.
Split into simpler sentences: Delusional parasitosis, or delusory parasitosis, also known as Ekbom's syndrome, is a form of psychosis. Victims acquire a strong delusional belief that they are infested with parasites, whereas in reality no such parasites are present.