Priapism occurs with -

Ref: The Forensic Medicine & Toxicology Dr.K.S. Narayana Reddy 32nd edition pg no:527 the spanish fly is also known as blister beetle.the powder ofthe dried body is a greyish brown and contains shiny green paicles.it is an irritant.the active principle is cantharidin.it is readily absorbed from all surfaces including the skin. symptoms:applied to skin ,redness and burning pain are produced after2 to 3 hours followed by vesication. taken internally symptoms appear in half to two hours , there is a burning sensationin the mouth and troat followed by pain in the stomach, nausea and vomiting of bloody mucus ,severe thirst ,difficulty in swallowing and speech. later a dull pain is felt in the loin , the urine is scanty and bloodstained ,though there is an increased dseire to pass urine . PRIAPISM may occur ,there is often tenesmus. aboion occurs in pregnant women, in severe cases the patient become prostrated convulsion occur and death may take place in a condition of coma