Arthropathy associated with cystic acne, hidradenitis suppurativa, and perifolliculitis capitis abscedens et suffodiens: treatment with isotretinoin.

A patient with arthropathy associated with cystic acne, hidradenitis suppurativa, and perifolliculitis capitis abscedens et suffodiens who showed a dramatic response to isotretinoin is described. This, to our knowledge, is the first report documenting effective treatment of this condition, whose nosologic position with respect to other spondyloarthropathies associated with cutaneous disease is considered.