The alteration in sense of taste, usually a metallic taste,and sometimes smell are the only symptoms of dysgeusia depend on the causes.if the alteration in the sense of taste is due to gum disease,dental plaque a temporary medication,or a short term condition such as a cold,the dysgeusia should disappeared once the cause is removed. In some cause,if lesions are present in the taste pathway and nerves have been damaged, the dysgeusia may be permanent