Itching with white discharge points most often to a yeast infection, and yeast also causes exactly the kind of rash you describe in the skin folds at the bikini line and under the abdominal fold, where warmth and moisture collect. That combination in both places at once makes a single fungal cause more likely than two separate problems. It is confirmed easily on examination, and blood
sugar is worth checking at the same time, since recurrent or widespread yeast infection can be the first sign of
diabetes.
Next Steps
Please see a gynaecologist for an examination of both the vaginal area and the skin folds, and ask for a
fasting blood sugar or
HbA1c along with it.
Health Tips
Keep the folds dry and wear loose cotton clothing. Avoid combination steroid creams bought from a pharmacy, as steroids make fungal rashes spread.