Weeks 12-40

Skin Changes / Melasma

Last reviewed by medical team: June 2026

🔵 Common Pregnancy Symptom

Why It Happens

Elevated estrogen and progesterone stimulate melanin production, leading to dark patches on the face (melasma, or "mask of pregnancy") and a dark line down the abdomen (linea nigra).

Safe Home Remedies

Apply a broad-spectrum SPF 30+ sunscreen daily.
Wear a wide-brimmed hat in the sun.
Avoid harsh chemical skin treatments.

⚠️ When to Contact a Doctor

Consult a dermatologist if you notice changing moles, bleeding skin lesions, or severe itching all over.

Related Guides & Resources

Typical Week Ranges

This symptom commonly occurs during these weeks of pregnancy:

Week 12 Week 17 Week 22 Week 27 Week 32 Week 37

Related Conditions

Symptom matches for these prenatal conditions:

✦ Gestational Diabetes ✦ Preeclampsia

Clinical Questions & Answers

Q1: Does melasma fade after pregnancy?

Yes, it usually fades gradually after birth once hormone levels normalize.

Q2: What causes the dark line on my belly?

The linea nigra is caused by increased pigmentation along the abdominal midline.

Q3: Are freckles darker during pregnancy?

Yes, hormones darken existing freckles, moles, and nipples.