الفهرس 
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Abstract
Background: Non-scarring alopecia areata (AA) is a disease that is
mediated through autoimmunity. Recently, autologous platelet-rich
plasma (PRP) and low level laser therapy (LLLT), have been suggested to
provide a valuable role in stimulating the growth of hair follicles (HF).
Aim: Compare between the significance and wellbeing of PRP and LLLT
in the management of AA.
Patients & methodology: Thirty patients, each having three patches of
AA participated in the study. Patches were assigned randomly to have
one of the two treatments: PRP or LLLT. The third patch served as a
control and received placebo treatment. PRP was done once weekly
whereas LLLT was done 3 sessions per week for a maximum of 6 weeks.
Patients were followed up at one month and three months. The thickness
and density of hair were evaluated by the folliscope.
Results: A noteworthy higher improvement was detected in the thickness
and the density of hair in the PRP treated patches as evaluated by the
folliscope and patients satisfaction. The obtained outcomes were
sustained during the 12 week follow-up period in most of patients.
Conclusion: PRP and LLLT could be considered as efficacious
alternatives for the treatments of AA with the least morbidity in addition
to a little cost profit ratio.