Hello.2 days ago I went to the lake beach, an at one moment my friend noticed that I had something red on my neck. When I got home I saw red rash on my neck and below the neck. I understand that my rash is probably caused by the sun, I also have a white tan, and didn't use sun cream.My rash doesn't itch ( I learned also on internet that ' sun poisoning' rash usually do itch) . Do you think it can be a sun rash or something else? Thanx