Systemic

Relating to or affecting the body as a whole or multiple organs, tissues, or body systems rather than being confined to one localized area.

Systemic is used when a process or condition extends beyond a single local site. For example, a systemic infection can affect the body beyond the location where the infectious agent initially entered, while a systemic medicine reaches the circulation and can act throughout the body.

Systemic does not necessarily mean that every organ or body system is affected. It simply indicates a distribution that is broader than a localized process.

COMMONLY CONFUSED WITH

  • Localized: restricted to a particular area, organ, or region.
  • Systemic disease: a disease that affects multiple organs, tissues, or body systems; “systemic” itself is a descriptive term rather than a diagnosis.

SEE ALSO

Clinical & Educational Context

Discussed in Health Articles & Guides

Explore how "Systemic" is covered across our evidence-based editorial guides:

1 Article
The Hard Parts of Medicine

Polypharmacy: What Really Happens When You Take Multiple Medicines

Longer or higher-dose systemic treatment can contribute to problems such as elevated blood glucose, increased infection risk, bone loss, and other adverse effects.