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.
Another skin condition that may be at the root of your red blotchy face is eczema. Eczema is what we call any inflammatory skin condition or dermatitis, and it can appear because of several different causes. In all its forms it appears as an itchy, red and bumpy rash that may have weeping, scaly and crusty lesions.