Satyaprasad Venkata

no, I think there is no point , no relation between platelets-r-plasma  and alopecia areata.               I use to prescribe 0,1 tacrollimus ointment with some good results, since it is an autoimmune disorder

regards!.

Thank you sir

There is a RCT with PRP technology : 

A randomized, double-blind, placebo and active-controlled, half-head study to evaluate the effects of platelet rich plasma on alopecia areata.

A. Trink et al -  British Journal of Dermatology 2013

DOI: 10.1111/bjd.12397

With good results in patchy alopecia areata. Is the first study with this technology.