For about a month now my penis head (glans) has been having some slight reddish bumps and after masturbation or frisky sex sometimes gets quite red and itches. The frenelum (I am uncircumsized) particularly gets itchy and the urethral meatus can be quite red as well. It is not like photos I have seen online of balanitis where there are huge red patches that look like they are going to bleed...just tiny little red bumps. Sometimes a bigger red patch will show up for a day or two but it's still pretty small, no bigger than a matchhead and not really raised much at all.
I am sexually active with my wife of 7 years. We are both very faithful and neither of us have STDs. I have tried alternating a steroid cream (my daughter gets it for eczema), Lotrimin and Coconut oil (supposed to have anti-fungal properties) every day for weeks now. If we got a few days without sex and I don't masturbate it seems to nearly go away completely (especially after applying the steroid cream) but the coronal ridge remains a tad more red than normal and so does the frenelum area.
As soon as I have any kind of sexual activity it comes right back. The skin on my glans also seems more "wrinkly" than normal.
I should mention that my mother suffers from a Candida Albicans overgrowth and I exhibit some of the signs of a similar infection at times. I crave carbs, I have dandruff that is hard to control, and in recent years any little scrape against my skin can turn into a puffy mark for an hour or so. Over the last week and a half I have also been eating a low/zero carb diet and taking herbal remedies to fight any possible candida overgrowth but the penis "rash" or whatever it is persists.
I should also note that over the last few years I have noticed that my penis glans does not stay moist like is typical for an uncircumsized man, it stays quite dry even though my foreskin completely covers the glans all of the time. Not sure if this has any relation.
From your symptoms it can be seborrheic dermatitis or fungal infection. First of all, don’t use any cosmetics on the penis,instead use some topical antimicrobials like Bacitracin or Lotrimin.Also corticosteroids and topical immunosuppressants can be used but they are available under prescription. Also retract the foreskin daily and soak in warm water to clean penis and foreskin.In case the symptoms persist then consult a urologist/dermatologist for evaluation and antimicrobials and steroids prescription.
It is very difficult to precisely confirm a diagnosis without examination and investigations and the answer is based on the medical information provided. For exact diagnosis, you are requested to consult your doctor. I sincerely hope that helps. Take care and please do keep me posted on how you are doing.