Red Spots On Penis, Taken Ketoconazole And Cream, 3 Month Diabetes Test Negative, Applying Johnson's Baby And Lulifin Cream

Hi I am a 43 year old male, off late I have been observing red spots on my penis glans , I had been taking my treatment from a dermatologist , as this problem had occurred earlier too. Usually a course of Ketoconazole Tablets and cream would subside it, but this time the cream also did not work. I was told by Doctor to get 3 month Diabetes test done, which came out negative. Second option he gave me was to get circumcised. Although I keep the area clean, I have not been able of get rid of it completely. Somehow my observation is that Johnson s baby cream is effective only if applied continuously, whereas even Lulifin prescribed by Doctor would aggravate the problem. The rashes are like red spots and sensitive to touch. Kindly help.