Itching, pain, odor, and blood spots in the external genital area - what could be the cause?

Patient's question:

Five days ago, I felt itchy and painful in the groin area with a bad odor. When I wiped it, there were blood spots, but I haven't gone to see a doctor yet.

Doctor's answer:

Eat less irritating foods
Avoid over-cleaning the vagina
Maintain a positive mood
Clothing choices: Wear pure cotton underwear because pure cotton underwear helps improve vaginal ventilation. Most inflammatory bacteria are Gram-negative anaerobic bacteria that dislike oxygen. Pure cotton underwear allows for ventilation and oxygen flow, which can help prevent the occurrence of vaginitis. Avoid wearing tight or non-breathable jeans as outerwear, as this can exacerbate poor ventilation in the vagina.