Why do I have bad mouth and nose odor?

You may have a skin condition known as impetigo. It is usually first seen as a red point and develops into an ulcer thereafter ten days or so, and is finally healed. It may also spread to other skin areas on the body. This is the result of bacteria entering the body through small cuts or sores. In a clean environment, and with the help of antibiotic ointment, the skin can be healed. 

Dandruff is a COMMON scalp condition causing itching and flaking. Hair loss can be caused by GENETICS, stress, or illness. Maintaining good scalp hygiene can help reduce dandruff. Use a medicated shampoo containing SALICYLIC ACID or KETOCONAZOLE to treat dandruff. Consider seeing a dermatologist if symptoms persist. Eat a balanced diet rich in PROTEIN and VITAMINS for healthy hair..

This infection occurs when the skin is invaded by bacteria or fungus. Itching, redness, and pain are some symptoms that may be experienced. Keeping the area clean and dry could be helpful. You might require an anti-fungal or antibiotic cream from the pharmacy store. Put on loose clothes to allow your skin to breathe and facilitate healing.

Your face might seem burnt from too much exposure to the sun, and this can be very uncomfortable. This occurs when the skin gets too much sun without protection. Symptoms can be redness, pain, and maybe blistering. Immediately get into the shade for relief, apply a cool compress, and use aloe vera gel to soothe. Wear sunscreen in future to avoid a repeat of the same.

You likely have a fungus on your testicle. The symptoms you have mentioned like the peeling of skin, white substance, and smell, along with itching, appear to be a normal fungal infection. They may be caused by the lack of hygiene or tight clothes. This can be solved by keeping a dry and clean environment, wearing loose clothes, and using a pharmacist-recommended antifungal cream.

The contact dermatitis can last a long time. It depends upon the nature, frequency and duration of the exposure to the allergens. If the exposure to the allergens continues it might take very long time. If the exposure to the allergens is stopped then it will be recovered quickly.