What Cause Rosacea And What Is The Treatment?

Question : I am 68 years old. I have had antibiotics to reduce the inflammation caused by mites on my nose, and do not think this is the issue. I believe the uncomfortable rashes that have recurred on my cheeks and nose, quite frequently over the last 2 years, are related to spices or supplements: I use turmeric, cayenne, cilantro, red and black pepper,Tabasco, peanuts / peanut butter, and ginger. I take a seaweed supplement that I understand could overdose me with iodine and cause the symptoms, however, I stopped using it 6 months ago and the rashes have reappeared, vitamin b12, vitamin d, Viagra, testosterone injections, lunesta (low dose), trazadone (low dose), and melatonin. I have used these spices all my adult life and these vitamins and medications for at least 5 years. I play a lot of golf therefore in the sun a lot but with 50+ SPF sunscreen. I had eczema as a child, but no issues as an adult. None of these problems occurred before I turned 64. HELP!