Tamoxifen and hair loss



Any advice would be greatly appreciated.

Had mastectomy in August and started on tamoxifen in September. I have significant hair loss on one side of my head. No bald patches but significant thinning.

I do get psoriasis on my scalp but I’ve had this since I was 17 years old and I am now 52. 

I have recently had blood tests and had deficiency in vitimam D and have been on medication for this that has just finished due to be retested in around 6 weeks.

I’ve been referred back to oncology but my appointment is on the 13th of February I’m worried I won’t have much hair left on one side.

I’m assuming it’s tamaxifen but anyone else had issues and if so any recommendations