Hello, When I was first put on Hydroxyurea 7X a week I had some hair loss and hair thinning. It wasn’t in “clumps” but I could see my scalp and it was obvious. After about seven months we got the dosage down to 3X a week and I slowly saw that going away. I’m taking it for two years now and my body has adjusted and it is no longer happening. Be aware
That it may cause very sensitive gums and tooth pain in the beginning also. Good news is that dissipates. Good luck and have fun in the sun. No direct Sun with being on this Medicine and that has really sucked!