This Is Your Brain on melasma pregnancy
https://brooklynne.net/profiles/blogs/6-books-about-melasma-pregnancy-you-should-read
The ‘mask of pregnancy’, also known as Melasma or Chloasma (medical names) is a skin condition that occurs in 45-75% of pregnancies. The name originates from the Greek word melas, which means black. In this condition,