1. Stop Taking Viagra.
This is the safe and correct call. If you are diagnosed with melanoma, you need to focus on getting back to health. I suggest you stop taking the drug and schedule an immediate appointment with your dermatologist. In fact, I would say that even without a diagnosis of any skin cancer, you should ask your doctor (or a second doctor) if you should stop taking Viagra (or Cialis or Levitra). If a doctor you trust reviews your patient history and encourages you to remain on Viagra, fine.
2. Get Healthy