<unk>  (from the Greek , meaning red) is redness of the skin or mucous membranes, caused by hyperemia (increased blood flow) in superficial capillaries. It occurs with any skin injury, infection, or inflammation. Examples of<unk>  not associated with pathology include nervous blushes.
Erythema
Skin whitening
Tenderness 
Dark skin
Dryness 
Figurate erythema
Tickling
Miosis