Night Sweats: Diagnostic Approach and Management

Initial Evaluation

The presence of "B symptoms" such as fever, unintentional weight loss >10% over 6 months, and night sweats together suggest lymphoma, tuberculosis, or HIV, according to the American College of Physicians 1, 2
Tuberculosis risk factors, including prior TB exposure, contact with drug-resistant cases, residence in high-prevalence areas, and immunosuppression, should be assessed, as recommended by the Centers for Disease Control and Prevention 3, 1
Lymphadenopathy, characterized by palpable nodes in any region, warrants excisional biopsy, not fine-needle aspiration, as suggested by the National Comprehensive Cancer Network 2

Tuberculosis testing, including PPD or interferon-gamma release assay, should be performed, especially in high-risk populations, according to the World Health Organization 1, 3
HIV testing is recommended, particularly in high-risk populations, as advised by the Centers for Disease Control and Prevention 1, 2
Chest radiography is a crucial diagnostic tool, and if abnormal, a CT chest with contrast may be necessary, as recommended by the American College of Radiology 1, 2
Serum immunoglobulin levels should be measured if Waldenström's macroglobulinemia is suspected, as suggested by the International Workshop on Waldenström's Macroglobulinemia 4, 1, 2

The classic triad of night sweats, persistent cough, and weight loss is suggestive of tuberculosis, according to the World Health Organization 5, 1, 3
Hodgkin lymphoma is characterized by B symptoms (fever, night sweats, weight loss >10%) with lymphadenopathy, as defined by the National Comprehensive Cancer Network 1, 2
Non-Hodgkin lymphomas, including diffuse large B-cell and marginal zone types, should be considered, as recommended by the American Society of Clinical Oncology 2
Waldenström's macroglobulinemia is a rare lymphoma that presents with constitutional symptoms, according to the International Workshop on Waldenström's Macroglobulinemia 4, 1, 2

Hormone replacement therapy may be considered for menopausal women with night sweats, as recommended by the North American Menopause Society 8
Anti-reflux treatment is effective for patients with GERD, according to the American Gastroenterological Association [[@ignore ref]]
Fluconazole or itraconazole may be used to treat coccidioidomycosis in patients with weight loss >10%, night sweats >3 weeks, or extensive infiltrates, as recommended by the Infectious Diseases Society of America 7