Why are pimples worsening under my thigh?

Without a proper evaluation and diagnosis, it is difficult to understand the cause of the problem. I suggest taking your mother to a right doctor. Based on your mother's medical history and certain evaluations, he will be able to know the cause of burning feet and hands and can suggest an appropriate treatment. Hope this proved helpful. 

Skin melanin treatment surgery can be harmful in the long run so I suggest not to go for it. You can try other treatments like chemical peels or dermabrasion instead. These treatments can help lighten the skin and are not harmful in the long run. Also using moisturizer and sunscreen can help.

It is possible that you are suffering from a skin condition called eczema. Eczema is a chronic condition that causes the skin to become irritated, red, and itchy. If the itching is severe or does not improve with over-the-counter treatments, you should see a dermatologist for further evaluation and treatment. A dermatologist can help diagnose the problem and provide you with the best treatment plan. They may suggest topical steroids, oral medications, light therapy, or other treatments to help control your symptoms.

Having a painful mouth ulcer can be uncomfortable. For some, the first signs of it manifest as a burning or tingling sensation. However, ulcers can also be induced by emotional stress, or injury to the mouth, or even eating certain food types. As a sedative, a gentle mouthwash that does not contain alcohol should suffice for you to clean the area of an ulcer. Besides, it's also possible to glue a pain relief gel or to swallow a tablet for pain relief. Bloating or blistering, which can be caused by spicy or acidic foods, should also be avoided. These foods may exacerbate your ulcer.

This condition may develop when acne is no longer severe and it may take time to naturally disappear. To aid the process, you may wash the area of your skin with a cleanser, be careful not to pick or get acne pimples, use oil-free moisturizers, and apply products with ingredients such as niacinamide or vitamin C. Bear in mind that the redness would need time to go before it finally disappears.