Night sweats are episodes of nighttime sweating that soak your nightclothes or bedding and are related to some underlying cause. You may occasionally awaken after perspiring excessively, particularly if you are sleeping under too many blankets or if your bedroom is too warm. These episodes are usually not labeled as night sweats and, although uncomfortable, typically aren't a sign of a medical problem. Symptoms of night sweat include: --Anxiety --Menopause --Hyperthyroidism (overactive thyroid) --Myelofibrosis (a bone marrow disorder) --Non-Hodgkin's lymphoma --Osteomyelitis (a bone infection) --Brucellosis (a bacterial infection) --Pyogenic abscess --Sleep disorders --Tuberculosis --Autonomic neuropathy --Carcinoid syndrome --Endocarditis --HIV/AIDS --Hodgkin's lymphoma --Leukemia --Stroke