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. 

When certain allergies occur, body parts tend to swell. This might have been caused by contact with something like a plant or chemical that does not agree with you. Ensure the affected area is washed properly. To reduce the swelling, you can use an antihistamine. Seek immediate medical attention if things get worse or if you find it hard to breathe.

It appears that you may be having an issue with the skin on your penis. Irritation, infection, or inflammation can cause redness and pain. Some common signs are itching, burning sensation and tenderness. Do not use rough soaps or chemicals in this area. Keep it dry and clean always. If these signs continue or becomes severe, seek medical advice immediately.