Is scratching sensitive areas within the private parts due to the presence of hair considered masturbation, which invalidates fasting and prayer, especially if the intention was not masturbation?

Masturbation is the expulsion of semen without intercourse, whether by hand or otherwise. Mere scratching is not considered masturbation unless it is intended to expel semen, or if one feels pleasure and lust and continues for the sake of lust. It is recommended to pay attention to the cleanliness of the area and to remove hair to avoid sensitivity. This may require consulting a specialist. One should not succumb to obsessive thoughts.