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If you put salt (NaCl) on a cut it may hurt a bit. The reason for this is that salt is able to kill germs. Therefore if you rub salt in a wound it will only be painful temporarily. If it hurts too much or continues hurting for too long, rinse the area with water. An application of a mild ointment has the ability to protect broken skin.

It seems that you might have an issue with cholinergic urticaria. This condition occurs when you are exposed to heat and your skin becomes itchy and burning. In order to cope, you should drink cool water, wear comfortable clothes.

I see that you are having dark spots on your face after getting a sunburn. This is called hyperpigmentation. It happens when your skin makes more pigment, called melanin, to protect itself from the sun. To help, avoid direct sunlight, use sunscreen, wear a hat, and apply aloe vera to soothe the burn. Over time, the dark spots may fade, but protecting your skin from the sun is key.

Experie­ncing itchiness around your bottom? The culprit could be a fungal infe­ction termed ringworm - prese­nting as a circular, irritating rash. Its emergence­ often stems from exce­ssive perspiration or inadequate­ cleanliness of the are­a. Fortunately, treatment is straightforward: ge­ntly cleanse the affe­cted region and apply an antifungal cream or powde­r. To accelerate he­aling, opt for loose, breathable unde­rgarments, allowing proper ventilation.

It seems like your skin is dry and lacks brightness; besides the pimple scars on your nose. Skin becomes dull due to lack of water in it. Spots get darker as a result of spots. Drink water and wash your face regularly using mild soap then apply lotion too. In addition, you can wear sunscreen to prevent the darkening of these patches further.

Those whiteheads on your forehead are probably a type of acne called comedones. The hair follicles become blocked with oil and dead skin cells. Skin conditions can be accompanied by small, white bumps. One way is to use mild face washes with salicylic acid or benzoyl peroxide which can help remedy the clogged pores. 

Stress, neglecting oral hygiene, and certain foods can cause mouth ulcers. Usually, Omeprazole tablets are not used for the treatment of mouth ulcers as they mainly aid with stomach issues. For the treatment of ulcers, you can use over-the-counter remedies such as oral gels or rinses to reduce the pain and facilitate the healing process. Do not forget to maintain a proper dental hygiene routine and a balanced diet to keep them from returning.