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. 

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.

Freckle­s appear as tiny, light brown spots that dot the skin, espe­cially on sun-exposed areas like­ the face. They're­ harmless markings. But for some, freckle­s become an aesthe­tic concern. To fade freckle­s, wear sunscreen and a hat whe­n outdoors. Opt for skin care products enriched with vitamin C or re­tinol. If self-conscious about freckles, conce­al them with makeup. Reme­mber, freckles are­ natural and require no medical inte­rvention.

Fungal infections can lead to an itchy rash in the vaginal and thigh area. The warm and humid climate is an ideal growth environment for fungi. Keep the area dry and clean. You can use antifungal creams available over the counter to help clear it up. Moreover, wearing loose and breathable clothes is also important. 

Lumps that develop near the penis may be caused by several factors. They may be herpes if they're either tender or similar to blisters. Moreover, among other signs, you might also experience some irritation in the groin. Herpes is an infectious virus that can be transmitted from one individual to another through sexual intercourse. However, to make sure, it is better to visit your healthcare provider and undergo the necessary tests. Proper medication and expert advice are necessary for the prevention and care of it.