firstly, dreams mostly speak in the language of symbol & metaphor,so will not be speaking directly of a genital disease,it is a metaphor for some other issue,
because of your strong feelings of disgust etc it may refer to feelings you have buried about yourself or even that of someone else ,if you take the word disease & split in two you get dis -ease, = unrest ,so to me the headline would read,
"unrest in a sexual area",this would suggest that you are not happy with this area of your life ,the dream is bringing it to your attention,
i am not an expert these are just my thoughts,they may be of use or not.
rgds mikey