Hair thinning from scalp psoriasis and will it be an issue to use finasteride?

Hello! I suffered heavy depression. And experienced Scalp Psoriasis, my hair become really weak in the process and it thinned out. My primary physician was able to prescribe a topical steroid for me and after months of treatment my scalp improved. But the hair deteriorated. Present day now, all the psoriasis is gone, but the scalp still itches with dandruff peeling, I use Nizoral often. I really wanna use Finasteride to help regrow my hair back, but the scalp is inflamed will it be a issue?