I am suffering with a disease in my testicular skin there are 50 to 100 rice shaped lumps my testicular skin, they are white in colour, they are very i?

Sebaceous Cysts: These are benign very common lesions that men get on their genitals. It sure sounds like you have more than the normal share of these cysts.

Go to see derm: You should go to see your md or dermatologist to get proper evaluation. Unfortunately, nothing can replace physical examination. It could be fungal infection, or something else.