Friend after analysing your symptoms i can make that you are suffering from Penile Candidiasis
.A penile yeast infection that attacks the skin of the penis is caused by the fungus Candida.Practicing anal or sex with a woman who is already affected with vaginal yeast infection is one of the most common causes of penile yeast infection. Even prolonged use of antibiotics or using contraceptives (condoms) that are lubricated with nonoxynol-9
can cause genital yeast infection
.Men suffering from diabetes
are also susceptible to penile candidiasis. Diabetics have abnormally high blood sugar levels, which is conducive for proliferation of candida. Although, antibiotics help to get rid of the infection, they also destroy the good bacteria. As presence of good bacteria is crucial to keep candida population under control, destruction of beneficial bacteria triggers the onset of yeast infection.
So do undergo some investigations like swab culture,random and fasting blood glucose level,HIV testing.
For treatment part i will suggest you to apply antifungal cream thrice daily together with Nizoral or Diflucan to be taken orally.Avoid unnecessary antibiotics or steroid use.Check and get treated Diabetes,HIV.
Feel free to ask questions