Erectile dysfunction is caused by physiological, psychological and sociocultural influences. This article discusses the relevance of erectile dysfunction to men with a learning disability. Erectile dysfunction is likely to be a hidden problem and an unmet health need for many men with a learning disability. Because of the paucity of published research in this area, the authors draw on their nursing experiences. They suggest a person-centred approach should be used to address the needs of these men, giving consideration to the sensitive nature of the problem.