Vaginal itching, severe at night, what's the reason?

Patient's question:

Detailed medical condition and consultation purpose: I have a condition of vulvar itching and want to consult for treatment.
Onset and duration of this illness: January 2005, duration of half a month.
Current general condition: Mild during the day, severe at night.
Medical history: Half a year.
Previous diagnoses, treatments, and their effectiveness: Medications and solutions were not effective.

Doctor's answer:

Vaginal itching is a common symptom among gynecological patients, often caused by various external genital lesions, but it can also occur in individuals with completely normal external genitalia. Candidal vulvovaginitis and trichomoniasis are the most common causes of vaginal itching. Lice and scabies can also lead to itching. Pruritus ani and vulvovaginal itching caused by pinworms typically occur only at night in young girls. Chronic vulvar dystrophy is characterized by severe itching, accompanied by white patches on the vulvar skin. Local allergies caused by reactions to condoms, tampons, sanitary pads, or other drugs and chemicals. Poor hygiene habits neglecting local vulvar cleanliness, with the infiltration of sebum, sweat, menstrual discharge, vaginal secretions, and even urine or feces, can lead to prolonged irritation and itching of the vulva. It is recommended that you seek a detailed medical examination promptly to identify the cause and receive appropriate treatment. Avoid self-medication. Maintain good hygiene for the vulvar area, avoid washing the vulva with soap; try to restrain scratching and friction of the affected area; and avoid spicy and irritating foods in your diet.

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