Adam was born in the United States to Egyptian parents. She plays as a midfielder, and began her career with the Pacific Women’s Soccer Team in California.
Last season, the 26-year-old was club captain at Turkish giant Galatasaray.
Adam stated via Twitter that she was excited to join Napoli and to play in the Italian League.
Napoli has won its first two games in Serie B and is currently second in the league table by goal difference, behind leaders Chievo.