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. 

According to your symptoms, it is melasma that you might have. It is common during pregnancy as dark marks are forming on the face, especially on the nose and cheeks. It is recommended to visit a dermatologist who can accurately identify and treat your condition

Sweating is your body's natural way to cool down. Certain medications can increase sweat production as a side effect or be symptoms of underlying medical conditions. Anti-sweat tablets reduce sweat secretion but may interact with your current medications. It's crucial to consult your doctor for a safe solution. They can adjust your medications or suggest alternative treatments to address the root cause of your sweating. Always communicate openly with your doctor about any concerns or changes in your medication regimen to ensure your health is prioritized.

Usually, cold sores appear as red, swollen bumps on or around your lips. They can hurt a little and may have clear fluid inside them. The virus responsible for cold sores is known as herpes simplex. You could try using over-the-counter creams or ointments to make them heal quicker. Always wash your hands and avoid touching the sore so it doesn't spread. 

A person with chickenpox has a sore throat as a common difficulty. This phenomenon is from the throat's being irritated due to the virus. The good news is that the sore throat gets better as the body fights off the virus. Drinking warm liquids and soft foods may work well to soothe the throat. If the sore throat is severe or lasts a long time, it's important to see a healthcare provider for further advice.