White patches on the skin can be due to Vitiligo, where the cells that give colour to the skin stop working, leading to pale or white areas. It is not an infection, not contagious, and does not spread by touch. The condition can be slow or sometimes spread over time, but in many people, it can be controlled and improved with treatment. Doctors may recommend medicated creams (such as mild steroid or other prescription creams) to help restore some colour, and in certain cases, light-based therapy can be used to stimulate repigmentation. Protecting the skin from sunburn by using sunscreen is important, as white patches are more sensitive. While there is no guaranteed permanent cure in every case, many people see good improvement and regain colour in patches with proper treatment and follow-up. Early consultation with a dermatologist gives better results and helps plan the right treatment for your skin.