Family Doctor publications has launched 'Understanding psoriasis', a new book in the Family Doctor series. The book, published in association with the British Medical Association, explains the skin changes that occur in psoriasis and the causes of the condition. It also describes, among other topics, different types of psoriasis and the different treatments available. Retail price, £2.49 (Family Doctor Publications, 10 Butchers Row, Banbury, Oxon OX16 8JH. Tel 01295 276627, fax 01295 276626).