What are brown spots near my neck and ear?

The treatment depends on the diagnosis and the cause of rashes and ring marks. Rashes and ring marks can be caused by a variety of reasons such as eczema, allergy, fungal infections etc. I advise you to take your son to a doctor for knowing the exact cause and diagnosis of rashes and ring marks. Based on that, a proper treatment plan can be recommended. 

You may have a condition named acanthosis nigricans. It can bring about thick, dark, smelly skin in places such as the underarms, and neck. Scratching is another symptom that is often associated with this condition. Acanthosis nigricans is related to the fact that one is overweight or has diabetes. Adopting a healthier lifestyle is necessary to eat a well-balanced diet and exercise can help improve this condition. 

It seems you are dealing with tonsillitis, a condition that is identified by the white spots in the tonsils. This often accompanies a viral or a bacterial infection that further causes manifestations like sore throat and difficulties in swallowing. The best way to relieve the symptoms is to drink a lot of fluids, get some rest, and take throat lozenges. If it still doesn't get better, it's a good idea to consult a health care provider for further help.

You see­m to have hypertrophic acne scars on both side­s of your nose. These raise­d, bumpy scars happen when too much collagen forms during he­aling. Treatments like lase­r therapy or corticosteroid injections can he­lp flatten and soften them. Howe­ver, you must protect your skin from the sun, as sunlight make­s scars more noticeable.

Jock itch is a common problem and it can be quite annoying. It is caused by a fungus that grows in warm, wet places such as the groin. The signs include the groin area being red, itchy, and having a rash. For the treatment, you can use store-bought antifungal creams. You should also make sure to keep the area clean and dry as it will help healing faster.