Rashes and small blisters on your wrist after sweating while wearing a metal watch or bangles are commonly caused by contact dermatitis. This occurs when your skin reacts to certain metals, such as nickel, which are often present in jewellery and watch straps. Sweat can worsen the irritation by increasing contact between the metal and your skin. To prevent this, avoid wearing the jewellery or watch that triggers the rash, especially during hot weather or exercise. Keep your wrist clean and dry, avoid scratching, and choose nickel-free or hypoallergenic accessories. You can also place a barrier, such as a protective cover or a thin cloth, between your skin and the metal. If itching or inflammation occurs, a doctor may recommend a suitable soothing cream or a mild steroid cream for short-term use. Seek medical advice if the rash and blisters spread, become painful, or show signs of infection.

Clean the bite gently with soap and water, apply an antiseptic, and keep it covered. Take a painkiller if needed and watch for redness, swelling, or pus. Inform a doctor if it worsens or if signs of infection appear.

For temporary relief from anal itching, you can apply an over-the-counter 1% hydrocortisone cream sparingly twice daily, but limit its use to 7 days to avoid skin thinning. Alternatively, a protective barrier cream containing zinc oxide can soothe the irritation. Keep the area clean and dry by washing gently with plain water?avoiding harsh soaps?and patting dry with a soft towel. Wear loose cotton underwear and avoid scratching. If your symptoms persist for more than a week, or if you notice bleeding or pain, please consult a healthcare professional to identify the exact cause, such as hemorrhoids, fissures, or a fungal infection.

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.

A burning sensation in the anal area is very common and often due to minor issues like hemorrhoids or small skin tears. For relief, you can apply an over-the-counter mild hydrocortisone cream to reduce inflammation, or a protective zinc oxide ointment. Soaking in a warm sitz bath for 15 to 20 minutes two to three times a day can also significantly soothe the area. Keep your stools soft by eating fiber and drinking plenty of water to avoid straining. If you experience severe pain, bleeding, or if symptoms persist beyond a week, please consult a doctor for a proper evaluation.

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.