<unk>  is a common nonspecific symptom due to a wide range of etiologies. Patients often use this term to describe a range of issues such as difficulty initiating activity, decreased capacity to maintain activity, trouble with concentration, memory, and emotional stability; or sleepiness or an uncontrollable need to sleep. The term<unk>  can sometimes be used synonymously with tiredness.<unk>  can present alone as a primary symptom or in association with other localizing symptoms.
Fatigue
Sedation
Somatization
Somnolence
Anorexia 
Xerostomia
Dyspnea
Hyperhidrosis