Short answer is of course! But if it is yeast, it is easy to control and please don t be frightened.It is not sexually transmitted, and will not affect virginity, fertility, etc. You didn t say, but yeast usually has a strong smell associated when growing on the skin and sometimes a weepy watery discharge. The rash has a sharp border. Yeast like any place where there is low oxygen, like where skin is against skin such as between the thigh and vulva, or between inner and outer genital lips. It can arise behind the ears if they rest close to the scalp. Next, yeast likes moisture such as from perspiration, places that collect water, or wearing wet bathing suits or sweaty work out clothes against the skin. It likes a high carbohydrate environment, so if you are a carb junkie (sweets, bread, cereal, pasta, fruit and sugary drinks) or diabetic, consider less carbs and less frequently. Yeast is also inhibited by an acidic environment. Most soaps are alkaline and can help yeast grow, so use lots and lots of water, and small amounts if any soap on affected areas. Antibiotics for bacterial infections also promote yeast by inhibiting competing bacteria, permitting yeast to grow. No one can eliminate yeast. It is a normal part of the biome-the natural and normal bacteria, fungus, and possibly viruses that coexist with each of our body s. So stay dry, avoid excess sugar and carbs and excessive soaps. There are prescriptive antifungals, but you can try any of the vaginal creams available in the local pharmacy to treat candidiasis. Throw away the applicators, and apply the cream 3-4 times a day. You can t cause any harm using lots of the cream (monistat, terazole are two of many types). You should improve in 2-3 days and it should be gone in a week. You may need a small amount after showering and drying to keep it away. If diabetes runs in your family, or the rash fails to resolve, please see you doctor. No one will assume you are sexually active or dirty. Don t be afraid. This is a common and treatable skin condition.