Skin, Hair, and Nails Assessment

The integumentary system is often the first place systemic illness shows itself. A careful assessment of skin, hair, and nails gives the nurse early clues to oxygenation, perfusion, hydration, nutrition, and organ function. This note reviews the key inspection and palpation findings, lesion patterns, and high-yield abnormalities tested on nursing exams.

Definition and Purpose

• Skin, hair, and nails assessment evaluates integrity, hydration, circulation, and signs of systemic disease.
• The exam uses inspection and palpation to detect changes in color, lesions, moisture, temperature, texture, turgor, and edema.
• Findings are often the first indicator of an underlying health problem.

Skin Inspection

Normal skin is uniform in color, warm, dry, and intact. Key abnormal findings include:

• Pallor — suggests anemia or shock; best seen in the face, conjunctiva, and nail beds.
• Cyanosis — indicates hypoxemia. Central cyanosis (lips, tongue) is more clinically significant than peripheral cyanosis (fingers, toes).
• Jaundice — yellowing of the skin and sclera; indicates liver dysfunction or hemolysis.
• Petechiae — tiny red or purple spots from bleeding under the skin; suggest low platelets or vasculitis.
• Ecchymosis — bruising. Large or spontaneous bruises suggest coagulopathy.

Skin Palpation

• Temperature should be warm bilaterally. Cool skin suggests poor perfusion; hot skin suggests fever.
• Moisture — dry skin may indicate dehydration; diaphoresis suggests fever or shock.
• Turgor — pinch the skin over the sternum or forearm. Skin that stays tented indicates dehydration.
• Edema — swelling from fluid accumulation, graded 1+ to 4+.

Edema Grading Scale

• 1+ — 2 mm depression, rapid rebound
• 2+ — 4 mm depression, rebound in 10–15 seconds
• 3+ — 6 mm depression, rebound in 1–2 minutes
• 4+ — 8 mm depression, rebound in 2–3 minutes

Skin Lesions

• Primary lesions arise from previously normal skin. Examples:
  • Macule — flat
  • Papule — raised
  • Vesicle — fluid-filled
  • Pustule — pus-filled
• Malignant lesions are screened using the ABCDE rule:
  • A — Asymmetry
  • B — Border irregularity
  • C — Color variation
  • D — Diameter greater than 6 mm
  • E — Evolution or change over time

Hair and Scalp Assessment

• Normal hair is evenly distributed and smooth.
• Alopecia (hair loss) may be localized or diffuse.
• Inspect the scalp for lesions and lice. Nits are small, oval eggs attached to hair shafts.

Nail Assessment

Normal nails are pink, smooth, convex, and firmly attached.

• Clubbing — loss of the normal nail angle (>180°) with a spongy nail bed. Indicates chronic hypoxemia.
• Spoon nails (koilonychia) — thin, concave nails; indicate iron deficiency anemia.
• Capillary refill — press the nail bed until it blanches; normal refill is less than 2 seconds. Delayed refill suggests poor perfusion.

Causes of Clubbing — "CLUBBING" Mnemonic

• C — Cyanotic heart disease, Cystic fibrosis
• L — Lung cancer, Lung abscess
• U — Ulcerative colitis
• B — Bronchiectasis
• B — Benign mesothelioma
• I — Infective endocarditis, Idiopathic pulmonary fibrosis
• N — Neurogenic tumors
• G — Gastrointestinal disease (Crohn's, cirrhosis)

Common Exam Traps

• Do not confuse pallor with cyanosis. Pallor is pale; cyanosis is blue.
• Do not ignore clubbing — it signals chronic hypoxemia, not an acute event.
• Do not use a fingernail to assess turgor in older adults; their skin tears easily. Use the forearm instead.
• Do not document "no edema" without checking both lower legs.

Key Takeaways

• Normal skin is warm, dry, intact, and uniform in color.
• Pallor = anemia, cyanosis = hypoxia, jaundice = liver disease.
• Poor turgor = dehydration; edema is graded 1+ to 4+.
• The ABCDE rule identifies suspicious (malignant) skin lesions.
• Clubbing indicates chronic hypoxemia; spoon nails (koilonychia) indicate iron deficiency anemia.
• Capillary refill should be less than 2 seconds; delayed refill suggests poor perfusion.