Main thing to cut back on are fatty foods.
This is a fungus, horrible I know. The cure is to make sure after a shower the areas are completely dried with a towel by pulling the towel from side to side. Then applying Lamisil, this is either a gel or a spray. I use the spray as it dries immediately. The spots should be gone in about a week, once they have gone it is drying this are thoroughly after every shower. If it comes back then use the stuff again. Unfortunately it is in the water and your skin in particular is reacting to the water in your area. You will probably find if you change state, country then they wont appear.
Hello! I had my thyroid removed 3 years ago I am a male. ever since then I been getting these pimples behind my neck. I'm thinking that is why I am getting these pimples. I do eat a lot of sea food. shell fish crab legs calamari clams etc.
It is better to consult doctor for right diagnosis.
It may be the shampoo and or conditioner you are using. Try changing out your brand of shampoo and conditioner. That may help. Good luck.
Might want to get your thyroid checked. This has been known to occur when thyroid is hypoactive. The eczema and psoriasis shampoos can help.