The relaxation response also seems to increase the available level of serotonin, which is a chemical in the body that positively affects emotions and thoughts. While this information is promising, more studies are needed to directly confirm the relationship between massage and levels of serotonin in the brain.
The most common cause of scrotal itch is skin lesions such as psoriasis and eczema, when people can scratch so intensely that they make the skin bleed. But these conditions are of course visible and you say there is no rash, so we must think again.
Here are some of the more common causes: 1  Hernias and hydroceles. These are the most common causes of scrotal swelling. 2  Varicoceles. These painless swellings are cause by enlarged veins in the scrotum that drain the testicles and send blood back to the heart. 3  Other causes.