Essential Facts on the Go: Internal Medicine (33 page)

VII_3_b
Pneumonia

Reproduced with permission from Halter JB, et al.
Hazzard’s Geriatric Medicine and Gerontology
, 6th ed. McGraw-Hill, 2009.

VII_4_a
Fever of Unknown Origin

Definition

Temperature of 38.3 (100.9) or higher for > 3 weeks without an obvious source despite a thorough investigation (3 outpatient visits or 3 days in the hospital).

Differential Diagnosis

Infectious

Tuberculosis

Abdominal abscesses

Pelvic abscesses

Dental abscesses

Endocarditis

Osteomyelitis

Sinusitis

Cytomegalovirus

Epstein-Barr virus

Human immunodeficiency virus

Lyme disease

Prostatitis

Malignancy

Chronic leukemia

Lymphoma

Metastatic cancers

Renal cell carcinoma

Colon carcinoma

Hepatoma

Myelodysplastic syndromes

Pancreatic carcinoma

Sarcomas

Autoimmune conditions

Adult Still disease

Polymyalgia rheumatica

Temporal arteritis

Rheumatoid arthritis

Rheumatic fever

Inflammatory bowel disease

Reiter syndrome

Systemic lupus erythematosus

Vasculitides

Sarcoidosis

Other disorders

Drug-induced fever

Complications from cirrhosis

Factitious fever

Hepatitis (alcoholic, granulomatous, or lupoid)

Deep venous thrombosis

VII_4_b
Fever of Unknown Origin

Reproduced with permission from Longo DL, et al.
Harrison’s Principles of Internal Medicine
, 18th ed. McGraw-Hill, 2012.

RHEUMATOLOGY

VIII_1_a
Arthritis

Rheumatoid Arthritis

Osteoarthritis