Where it is
Covers the entire body surface; thickest on the palms and soles, thinnest on the eyelids.
What it does
Protects against infection and fluid loss, regulates temperature, senses the environment and makes vitamin D.
Clinical relevance
- Older adults have thinner skin with less fat and slower healing, so they tear and bruise easily.
- Jaundice is best seen in the sclera; cyanosis in the lips and nail beds.
- Moist skin (incontinence, sweating) breaks down faster.
Nursing focus
- Use barrier creams for incontinence and lift sheets to avoid shear.
- Inspect high-risk areas every shift: sacrum, heels, hips, elbows, back of the head and under devices.