<prompt> All the following are primary cutaneous diseases except:PsoriasisReiters diseaseLichen planusIcthiosisBowens disease  <response>: B i.e. Reiters disease: Reiters disease or syndrome is primarly a reactive polyahritisQ characterized by presence of non suppurative, painful, asymmetrical oligoahritis with or without urethritis, ureitis, conjunctivitis, oral ulcers and secondary cutaneous involvement in form of rashQ. Psoriasis, Bowens disease squamous cell carcinoma in situ, lichen planus and icthyosis are primary cutaneous diseases. 