Vulvar and Vaginal Atrophy (Atrophic Vaginitis): This condition is very common in postmenopausal women due to the decrease in estrogen levels, leading to thinning and drying of the vaginal walls, which can cause itching, burning, and discomfort.

Vaginal Yeast Infections: Although more common in premenopausal women, yeast infections can still occur in postmenopausal women, especially if they have factors like diabetes, use of antibiotics, or immunosuppression.
Bacterial Vaginosis: An imbalance in the normal bacterial flora of the vagina can lead to symptoms like itching, burning, and abnormal discharge.
Contact Dermatitis: Irritation from soaps, douches, or other products can cause an allergic reaction leading to itching and redness in the vaginal area.
Lichen Sclerosus: A chronic skin condition that can cause itching, pain, and scarring in the genital area, more common in postmenopausal women.

Vulvar Cancer: Although rare, vulvar cancer can present with itching as an early symptom. It's crucial to rule out this diagnosis with a thorough examination and possibly a biopsy if a lesion is found.
Invasive Infections (e.g., Herpes Simplex): Certain infections can cause severe symptoms, including itching, and require prompt antiviral treatment.
Systemic Diseases (e.g., Diabetes Mellitus): Uncontrolled diabetes can lead to infections and conditions that cause vaginal itching, highlighting the importance of managing underlying health conditions.

Lichen Planus: A rare skin condition that can affect the mucous membranes, including the vagina, causing itching and lesions.
Psoriasis: Although primarily a skin condition, psoriasis can rarely affect the genital area, leading to itching and redness.
Foreign Body: In rare cases, a foreign body in the vagina can cause itching and other symptoms, especially in women with cognitive impairment or young girls.