The year 2015 marked the hundredth anniversary of the birth of Ian Bruce Sneddon (Fig. 1). He was a dermatologist who contributed to the development of neurology by describing a form of non-inflammatory arterio-occlusive disorder which may manifest with stroke or other severe central nervous symptoms, and a livedo racemosa of the skin (Sneddon syndrome) [1, 2]. He was also one of the pioneers of modern psychodermatology [3] and contributed to the development of the knowledge about the nutritional neuropathy [4].