Vulvar itching can result from multiple causes, such as irritation, allergic reactions, fungal infections, dryness, or skin conditions like dermatitis, and the appropriate treatment depends on identifying the exact cause. Hydrocortisone 1% is a mild steroid that may reduce inflammation and itching, but it should not be used on the vulvar area without a proper medical evaluation, especially if the cause is unclear. Using it without diagnosis may mask an infection or delay correct treatment. It is important to consult a gynaecologist or dermatologist for proper examination and appropriate treatment based on the underlying cause.

Your symptoms?specifically the location on your inner ankle and color changes with temperature?strongly suggest stasis dermatitis (related to poor circulation) rather than a drug allergy or standard contact dermatitis, though varicose eczema is possible. Before starting any medicated creams, you need a professional evaluation to check your leg veins. For relief, keep the skin moisturized with a fragrance-free emollient, avoid hot water, and elevate your legs when resting. If diagnosed, a doctor may prescribe a mild topical steroid cream (like hydrocortisone) to reduce inflammation and recommend compression stockings. Please consult a physician for an accurate diagnosis.

Pityriasis rosea is a common skin condition that usually starts with one larger patch followed by smaller pink or reddish rashes on the body. It is not usually dangerous and often improves on its own within a few weeks to a couple of months. The exact cause is not always clear, but it may be linked to a mild viral reaction in some people. The rash can become more noticeable with sweating, hot showers, or tight clothing, and some people may also feel itching. Using mild soap, avoiding harsh skin products, and wearing loose cotton clothes may help reduce irritation. Try to keep the skin moisturised and avoid scratching, as this can worsen discomfort. If the itching is troubling, a doctor may suggest creams or medicines for relief. You should see a dermatologist if the rash spreads rapidly, becomes painful, affects the face or mouth, or does not improve after several weeks.

Your itchy patches suggest an allergic reaction or contact dermatitis, likely triggered by histamine-rich foods like brinjal and certain fish. Because diabetes can impair skin healing and increase infection risk, careful management is essential. First, strictly avoid these trigger foods. For temporary relief, you can apply a mild, over-the-counter 1% hydrocortisone cream twice daily for up to a week, combined with a thick, fragrance-free moisturizing emollient to protect your skin barrier. An oral antihistamine like cetirizine can also help calm the itching. Please consult a dermatologist or your doctor for a formal diagnosis and a safe, tailored treatment plan.

Chronic itching around the anus, especially when it persists for several months and begins affecting both sides, can be caused by various factors such as dermatologic conditions (e.g., eczema, psoriasis, or fungal infections), haemorrhoids, anal fissures, intestinal infections, poor hygiene, or allergic reactions to products. Given that your symptoms have lasted for 10 months and are spreading, it's important to consult a healthcare provider for a thorough evaluation. A physical examination and further tests are necessary to identify the underlying cause and determine the most appropriate treatment, as self-diagnosis and over-the-counter medications may not address the root cause and could worsen the condition.

Since your blood tests are normal, your dark circles may be due to genetics, allergies, or thin skin. The itchy neck suggests possible contact dermatitis or mild eczema. For the neck itching, you can apply an over-the-counter mild hydrocortisone cream (1%) sparingly for a few days and take an oral antihistamine like Cetirizine. Keep the neck well-moisturised with a gentle, fragrance-free cream. For dark circles, use a daily sunscreen and eye creams containing Vitamin C, caffeine, or retinol. Please consult a dermatologist for a physical evaluation to identify specific allergic triggers and get a tailored treatment plan.