Each is a characteristic manifestation of necrotizing ulcerative gingivitis (NUG),except one.Which is the exception?

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Marasmus is a serious health problem in developing countries; it is not associated with NUG because it occurs in infants when protein and kilocalories are deficient in the diet.A similar disease,Kwashiorkor develops when young children receive adequate kilocalories,but not enough high-quality protein.Cardinal signs of NUG are severe gingival redness (erythema)and inflammation and necrosis of the interdental papilla.This painful gingivitis is generally accompanied by a metallic taste and foul odor or smell.

Each Is a Characteristic Manifestation of Necrotizing Ulcerative Gingivitis (NUG),except