Thank you very much for this information. It is like Spider and it is on the main think vein. I shall use the techniques you have suggested.
From your symptoms it looks like spider veins or varicose veins penis. The varicose vein on the penis does not require any treatment. It may bruise during sexual intercourse and thus wearing of a condom is highly recommended. Also use of lubricants is recommended during masturbation or during sexual intercourse to avoid bruising the vein. No other treatment is required. In fact most of the treatment like laser treatment will cause scarring,infection,nerve and vascular damage.
I sincerely hope it helps. Take care and please do keep me posted on how you are doing. Kind regards.