25 citations,
April 2010 in “Clinical and Experimental Dermatology” Erlotinib can cause hair loss and scalp issues, which improve after stopping the drug.
73 citations,
November 2000 in “Proceedings of the National Academy of Sciences of the United States of America” There are two ways to start hair growth: one needs Stat3 and the other does not, but both need PI3K activation.