In your note you had mention that you started facing with alopecia areata ,which affected at beard site which may call alopecia barbae .It is an autoimmune condition which mostly affect scalp area.But It can affect any hairy area of the body also like eyebrows and beard.It has to be treated properly ,may take long duration.Once the immunity is controlled, hair grows back over the patches.You may can share some pics of affected area and consult me through online via clinic. Thank you Milagro Med (pune)