Blotching refers to the appearance of irregular, discolored patches on a surface, often the skin, fabric, or paint.
It is characterized by uneven distribution of color, resulting in areas of lighter and darker tones. This often occurs due to uneven application of a substance, a reaction to a substance, or changes in the material itself.
The term encompasses the visual effect of a 'blot' or a 'patch', suggesting a lack of uniformity and can be associated with imperfections or flaws in the material's consistency or even surface.
These irregularities are typically a result of some type of disruption or imperfection. .