The Vietnamese word "rôm" has a couple of meanings and uses that are important to know:
Prickly Heat / Heat Rash: "Rôm" often refers to a skin condition known as prickly heat or heat rash. This usually occurs when the sweat glands become blocked, leading to itchy red bumps on the skin, especially in hot and humid weather.
Phấn Rôm (Powder Against Prickly Heat): "Rôm" can also refer to a type of powder used to prevent or soothe prickly heat. This powder is commonly used on babies and children to keep their skin dry and comfortable during hot weather.