Thanks for posting on HCM,
Irritation of the penis and scrotum
provoked by heat is most likely due to the presence of an infection (most probably of fungal origin but could also be due to other microbes). If there is a leak after urinating it is best you get consulted as soon as possible so that a prompt investigation and examination could be done by a doctor. You maybe having a urethritis
or an STD
. Screening for STDs, urinalysis
and blood tests (to find out signs of inflammation maybe needed). Application of cream only will not help if the cause of your worry is due an STD and that will need to be treated effectively with oral or injection of antibiotics.
Hope this helps and wish you the best.