Ringworm is a cutaneous infection which a fungus causes. Symptoms such as red, itchy, and scaly spots that look like circles may occur on the skin. The ringworm can be transmitted through contact with infected people, pets, or objects like shared towels. Therapy involves antifungal creams or tablets. You can also prevent the spreading of the infection by keeping the area clean and dry.

There are a few treatment options available for black spots on the face. The most common and effective treatments are chemical peels, laser treatments, and topical creams. Depending on the severity of the spots and the desired results, the cost can vary widely. It's best to consult a dermatologist to determine which treatment is best for you.

Human Papillomavirus (HPV) is a virus that affects a considerable number of young people. Symptoms might include genital warts or no symptoms at all. HPV transmits from one person to another via skin-to-skin contact during such actions. To deal with it, focus on getting regular check-ups, safe sex practices, and HPV vaccination if you have not yet taken the vaccine.

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. 

This could be a clue to some infection. See a dermatologist immediately for an accurate diagnosis and proper treatment. Immediate medical treatment is vital in such situations.