brimstone - an old name for sulfur. native sulfur, native sulphur. atomic number 16, sulfur, sulphur, S - an abundant tasteless odorless multivalent nonmetallic element; best known in yellow crystals; occurs in many sulphide and sulphate minerals and even in native form (especially in volcanic regions)
These patches of red, and sometimes irritated or itchy, skin can appear anywhere on the body, but they are most commonly found on the arms, neck, and face. These blotchy patches can be caused by a variety of factors, such as weather, genetics, allergies, or environmental conditions.
Blotchy Skin Explained. Blotchiness and uneven skin tone can be due to many factors including sun exposure and heredity. You may see red, white or dark patches on your skin. These blotchy patches of skin may become more visible when dead surface skin is not regularly exfoliated.