Skin Discoloration

Skin discoloration includes any change from normal skin color — darkening, lightening, redness, yellowing, or unusual patterns. Most causes are benign, but some indicate underlying medical conditions.

Table of Contents

Quick Facts

  • ICD-10: L81

Common Patterns

Darkening (hyperpigmentation)

  • Sun damage and age spots
  • Melasma (often pregnancy-related)
  • Post-inflammatory hyperpigmentation
  • Acanthosis nigricans (often diabetes-related)
  • Medication-induced

Lightening (hypopigmentation)

  • Vitiligo
  • Tinea versicolor
  • Post-inflammatory lightening

Yellow

  • Jaundice (liver disease, hemolysis)
  • Carotenemia (excessive carrot or sweet potato intake)

Blue

  • Cyanosis (low oxygen — possible emergency)
  • Bruising

Red

  • Rosacea
  • Cellulitis
  • Allergic reaction

When to See a Doctor

See a doctor for:

  • Yellowing of skin or eyes
  • New blue or gray discoloration (could indicate low oxygen)
  • Rapidly expanding red, warm areas
  • New dark patches (especially in skin folds)
  • Skin changes with other symptoms

Related Symptoms

Skin Redness

Specific discoloration

 Pale Skin

Lightening
Medical Disclaimer: This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider with questions about a medical condition. If you are experiencing a medical emergency, call your local emergency number immediately.

References

  • American Academy of Dermatology. Pigmentation Problems.