Which body areas should be avoided when selecting an injection site?

When selecting an injection site, avoiding scar tissue and moles or skin issues is essential for several reasons. Scar tissue can have altered blood flow and may not absorb medication effectively, leading to inconsistent drug delivery. Moles and other skin conditions can pose a risk of infection or adverse reaction during the injection process. Additionally, injecting into an area with skin issues may exacerbate those problems or introduce contaminants into the body.

In contrast, while flexed joints might be considered less optimal due to the movement potentially causing discomfort or affecting the injection's efficacy, they are not as contraindicated as areas with skin issues. Large muscle groups are typically preferred sites for certain types of injections, as they can accommodate larger volumes of medication and provide good absorption. Areas with visible veins are often avoided mainly for intravenous access but can be less of a concern for intramuscular or subcutaneous injections. Thus, the presence of scar tissue and skin irregularities stands out as a primary consideration when ensuring safe and effective injection practices.