Pregnancy-related skin changes

• Pigmentation:

  • Linea nigra: darkening of pigmented areas, first trimester of pregnancy
  • Melasma: irregular, sharply marginated areas of pigmentation in a symmetrical pattern, either on the forehead and temples, or central face. Develops in the second half of pregnancy
  • Melanocytic naevi - may show transient changes in clinical and dermoscopic appearance, but any signs suggestive of melanoma should be investigated
• Common vascular changes:

  • Non-pitting oedema of the legs due to increased hydrostatic pressure
  • Varicose veins of the legs, haemorrhoids, and vulvar varicosities are common
  • Spider telangiectasias: disappear post-partum
  • Palmar erythema
  • Pyogenic granuloma
• Skin conditions that occur specifically during pregnancy (pregnancy specific dermatoses):

  • Pemphigoid gestationis
  • Polymorphic eruption of pregnancy
  • Prurigo of pregnancy (atopic eruption of pregnancy)