honeypot link
skip to main content
  • follow us on facebook
  • follow us on Instagram
  • follow us on Youtube
  • follow us on Twitter
MSDMERCK MANUALConsumer Version
HEALTH TOPICSHEALTHY LIVINGSYMPTOMSEMERGENCIESDRUG INFORESOURCESCOMMENTARYABOUT US
homeHEALTH TOPICSHEALTHY LIVING
Search icon
  1. Home/
  2. Quick Facts: Cancer/
  3. Overview of Cancer/
    Overview of Cancer
    • Overview of Cancer
      • What is cancer?
      • Why does cancer kill you?
      • Where in your body can you get cancer?
      • What are the most common cancers?
    • Defenses Against Cancer
      • How does your body defend against cancer?
      • Why do the body’s defenses sometimes fail?
    • Development and Spread of Cancer
      • How does cancer start?
      • How does cancer spread?
    • Diagnosis of Cancer
      • How do doctors diagnose cancer?
      • What tests can screen for cancer?
      • What tests can diagnose cancer?
        • Staging tests
    • Paraneoplastic Syndromes
      • What is a paraneoplastic syndrome?
      • What are the symptoms of paraneoplastic syndromes?
        • General symptoms
        • Skin symptoms
        • Neurologic (brain, spinal cord, and nerve) symptoms
        • Endocrine (hormone system) symptoms
        • Other symptoms
    • Risk Factors for Cancer
      • What are genetic risk factors for cancer?
      • What are environmental risk factors for cancer?
      • What are other risk factors for cancer?
    • Symptoms of Cancer
      • What are the symptoms of cancer?
        • Pain
        • Bleeding and blood clots
        • Weight loss and feeling weak
        • Muscle and brain symptoms
        • Lung symptoms
    • Warning Signs of Cancer
      • What are the warning signs of cancer?
    MSD
    • About
    • Disclaimer
    • Permissions
    • Privacy
    • Cookie Preferences
    • Terms of use
    • Partnerships
    • Contact Us
    • Global Medical Knowledge
    • Veterinary Edition
    • Print Editions
    • Mobile App
    • follow us on facebook
    • follow us on Youtube
    • follow us on Twitter
    • follow us on Instagram
    This icon serves as a link to download the eSSENTIAL Accessibility assistive technology app for individuals with physical disabilities. It is featured as part of our commitment to diversity and inclusion. M
    • follow us on facebook
    • follow us on Youtube
    • follow us on Twitter
    • follow us on Instagram
    This icon serves as a link to download the eSSENTIAL Accessibility assistive technology app for individuals with physical disabilities. It is featured as part of our commitment to diversity and inclusion. M
    MSD

    Copyright© 2025Merck & Co., Inc., Rahway, NJ, USA and its affiliates. All rights reserved.