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.

Having a rash for 20 days means it is best to consult a dermatologist for an accurate diagnosis, as different rashes require different treatments. To help soothe your skin safely in the meantime, you can apply a mild, fragrance-free moisturizer or a thin layer of over-the-counter hydrocortisone 1% cream to relieve itching. Avoid using steroid creams on your face or for long periods without a doctor's guidance. If the rash is itchy, an oral antihistamine like cetirizine may help. Avoid harsh soaps and hot water. Please see a doctor promptly if you develop a fever, pain, or rapidly spreading redness.

It is best to pause using Betadine ointment, as it is an antiseptic that can sometimes further irritate sensitive or inflamed skin. To help soothe the itching and pain, you might try a cool compress, a mild over-the-counter hydrocortisone cream, or an oral antihistamine like cetirizine. Simple pain relievers like ibuprofen can also help. Because these symptoms could range from an allergic reaction to a skin infection, please have a healthcare professional examine your shoulder in person to ensure you receive the safest and most effective treatment.

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.

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.

Pain after sex for both partners is commonly caused by friction, inadequate lubrication, or a shared infection like yeast. For immediate relief, gently wash with warm water and apply a plain, unscented moisturizer or over-the-counter 1% hydrocortisone cream externally to soothe irritation. If a yeast infection is suspected, an antifungal cream like Clotrimazole can be applied. Avoid sexual activity until the pain resolves. Because both of you are experiencing symptoms, please consult a doctor to rule out sexually transmitted infections or allergies to latex/spermicides. Using a water-based lubricant during future intercourse can significantly reduce friction-related pain.