What skin pigmentation disorders can be caused by pregnancy?

Skin and Pregnancy. The skin is definitely affected by the hormonal changes in pregnancy. Among the changes are: darkening of areas (freckles, nipples, inner thigh), linea nigra (dark vertical line on the belly), worsening of acne, melasma (darkening of sun exposed areas of face), spider veins, and of course stretch marks. Once the hormones return to normal, most of these may return to normal.
Chloasma & more. In general, pregnancy hormones stimulate changes that cause hyperpigmentation, or skin darkening. Chloasma (called melasma if unrelated to pregnancy) is when the darkening occurs on the face. Linea nigra is a darkening of the linea alba, a vertical line from your belly button to your pubic bone. Good news is that all generally return to normal a few weeks after delivery!

Related Questions

Do most skin pigmentation disorders affect a person’s overall health?

No. Most skin pigmentation disorders do not affect a person's overall health. However, they can be associated with other health concerns. Patients should seek evaluation any time there is a new or changing skin pigmentation issue to obtain a proper diagnosis and have other associated diseases assessed. For example, vitiligo is not dangerous in itself, it is associated with thyroid disorders. Read more...
Pigmentation. Most causes for darkening of the skin are not serious but there are a few like acanthosis nigricans that can be a sign of diabetes. Read more...

What tests can be done to detect various skin pigmentation disorders?

Depends on... There are many skin pigmentation disorders. It could be related to systemic disorders such as addison's disease, hemochromatosis, or cirrhosis, etc... If suspected, there are blood test that your doctor can check to diagnose your condition. Many drugs can cause dyspigmentation, such as minocycline, amiodarone, etc.... These are diagnosed based on the clinical pattern of dyspigmentation. Read more...
Skin biopsy. Many pigmentary disorders are diagmosed clinically, by the way they look, and associated symptoms. If there is doubt, a skin biopsy can be helpful. Read more...