@chuckdm I too had severe itching on my scalp and neck. I am not sure if you read my latest post, but I am almost completely itch and rash free since consuming a whole bunch of cilantro and a tsp of chlorella in a smoothie daily for about a month. My scalp still itches a bit, but not as severe and seems to be getting better every day. If I miss a day, I might get the start of a new papule here or there. But if I stay with it constantly, I have no issues. I have to say the scalp itching was the worst but it is completely bearable now. Give it a try. It can't hurt. I know of several other Grover's suffers that this has worked for., Some needed less Cilantro, some needed more. Some found relief in days while others took a month or more like me. Good luck! I hope you find relief soon!