It is hard to diagnose your balding without a professional examination. If you are worried about hair loss, you should visit a dermatologist who is a specialist in hairs loss problems. They can analyze your condition and give you optimal care.
 

It depends on the extent of the damage. If the wound is mild, cleaning it with a mild soap and water will promote healing. For serious cases, you should head to a dermatologist or a plastic surgeon with expertise in breast reconstruction. It is also wise to seek medical assistance to avoid possible complications.
 

It seems you are facing a heat rash which is a common condition. Your skin gets too hot due to the sun and it can make your skin red, itchy, and throbbing. After a time, you should avoid wearing clothes that are too tight. Make sure to wear cool, loose-fitting clothes. Moreover, always keep below clean and dry when there is a chance of heat rash. Calamine lotion can also be a good option to use to relieve the burning skin. Drinking enough water is important. 

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.

Acne close to your chin has a sharp pain for two years it can also be one of the symptoms of PCOS when you do not have irregular periods and your weight is fine. Hormone disruptors like PCOS are the cause of acne in the region of the chin. One thing to notice is that treatments with creams like salicylic acid, and laser resurfacing can be another option if you commit more to finding the right products for your skin. Not only antibiotics but also the ability of drugs to fight against PCOS by lifestyle changes leads to a reduction of acne too.

Pimples can be annoying, but there are solutions to help. These spots come from blocked pores and germs. A gel with clindamycin phosphate and benzoyl peroxide can kill bacteria and reduce swelling. Alternatively, clindamycin phosphate with niacinamide may be better for redness and irritation. Both options work well, so you should pick the one best for your skin type. Not sure which to try? Start with one, then switch if it doesn't help.