I have these dry patches or spots on my arms and I want to know if it is normal? How can I treat it? Patches/spots are a white color. White dots in the middle of it. (small dots)

It. It would be helpful to know if they are itchy or painful? How long have they been present? You could be dealing with a dermatitis from certain lotions or detergents, and even eczema can present this way. There are also fungal infections that can cause patches/spots similar to what you described. The treatment for a fungus versus a dermatitis or eczema is different, therefore I would recommend a visit with your primary care provider in order to get a diagnosis so appropriate treatment can be started. Good luck.