Concomitant alopecia areata and hypertrichosis after infliximab therapy: rara avis.

We present a 37 year-old man with HLA-B27 positive ankylosing spondylitis for the last 3 years. Interestingly, he developed both alopecia areata and hypertrichosis simultaneously following infliximab treatment. Reporting this interesting patient of ours -to our best notice for the first time in the literature- we call attention of clinicians to the contradistinctive effects of anti-TNF-α agents on hair growth cycle.