📋 Why Insulin Do Not Inject Original Position
1. Lipodystrophy
Lipohypertrophy → Convex / hard nodules under the skin from fat accumulation because insulin encourages fat cells to grow.
Lipoatrophy → Pit Dent Skin Caused by Fat Destruction / Immune Reaction to Insulin
2. Abnormal Insulin absorption
If injected in a lump, lipohypertrophy → insulin absorbs unevenly (sometimes slow absorption, sometimes fast).
As a result, sugar swings, poor control of diabetes.
3. Risk of infection and skin irritation
Repeated injections of the original area make the skin sensitive, inflammatory, or easily infectious.
4. Sore and wound heal slowly
Reusing the original position needle causes more pain, and may bruise the tissue.
📌. Defense principle.
Rotate site → circulate injection position, e.g. abdomen → upper arm → thigh → hip
In the same position, you should switch points, such as the abdomen, to turn around the navel, not to stab again.
Spaced at least 1-2 inches from the original point.
Always check the skin before injecting. If there is a hard lump / dent, avoid it.
👉 Therefore, the same insulin injection is prohibited repeatedly because it will cause lipodystrophy → absorption of the drug is uncertain → sugar is uncontrollable.