It is important to keep your child’s feet clean and dry to prevent infection and cracking. A dermatologist or podiatrist can best determine and treat the condition. However, the best solution for cracked feet is to keep your feet hydrated and moisturized. This can be done by using lotions and creams specifically designed for cracked feet. You can also soak your feet in warm water with Epsom salts or other moisturizing oils such as olive oil or coconut oil. 

You might have had a cyst on your back. It is a sac filled with fluid or pus formed under the skin. If infected, it can be red, white, or black, and the skin can be painful. By the way, the liquid is freed when pressed and the cyst is emptied. The doctor should examine it to be sure it is cared for and removed.

The most common reasons behind this are allergies and skin irritation. You should pay attention to the products you use because they should not contain any harmful ingredients. To fight against this problem, moisturize well and avoid using soaps and chemicals that are too harsh.

Hair loss can be due to several factors such as stress, unhealthy diet, or hormone variations. It's normal for humans to shed up to 100 strands of hair daily. But if it's a lot more than usual, you might notice bald spots or thinner hair. Eating well, calming your mind, and using hair products that are not too harsh may help to prevent hair loss. 

A skin infection likely caused by a virus is probably what you have on your leg. These skin infections may appear in the form of redness, swelling, and sometimes, pain. They can get diffused from a person to a person by contact. A gleaming, gentle antiseptic cloth, however, along with some timely rest brings an enhanced quality of life. In addition, you would want to think about not scratching the area as the infection may diffuse. The point to be noted is if the symptoms are remaining or getting worse, it would be better if you consult a doctor.