Can Ayurveda provide permanent relief for groin itching?

There are a few options that you could try. First, it may help if you switch up your skincare routine. Make sure you are using gentle cleansers and moisturizers that are suitable for your skin type. You may also want to look into products that contain salicylic acid or benzoyl peroxide, which can help reduce inflammation and clear up acne. Additionally, you may consult with a dermatologist to discuss further treatment options. They may be able to recommend a prescription topical treatment or a course of antibiotics that could help clear up your acne.

Bacteria on the skin mix with sweat, causing odor. Certain foods can worsen body odor. Using aluminum deodorant helps reduce sweating. Shower daily and wear breathable fabrics. Stay hydrated and maintain a healthy diet. Body odor isn't a complex issue—keeping clean is key. However, since bacteria are always present, it's important to combat odor daily.

Acne scars and pigmentation can be treated with topical creams, chemical peels, and laser therapy, depending on the severity of the condition. You must consult a dermatologist for correct diagnosis and treatment plan.

You may have a hernia. This occurs when internals are pushed through a weak part in a muscle. Although there is no pain now, it should be examined by a doctor. They may advise treatment such as an operation to repair the damage and avoid further problems. 

It might be that your underarms have become darker due to some other reason. So, it is best to consult an experienced dermatologist. The dermatologist may examine your condition to know the exact cause of it and determine a suitable treatment accordingly.