In his Libellus de Supplemento (Supplement to the Life of Catherine of Siena), Tommaso Caffarini placed Catherine of Siena within the wider context of stigmatization, providing an extended discussion of stigmata and how they could be defined. Countering claims that Saint Francis of Assisi was the only true stigmatic, he argued for an expanded understanding of stigmata in direct opposition to the restricted Franciscan definition of the term. Caffarini stressed that it could relate to the reception of all or some of the wounds received by Christ during his Passion, not just the wounds received on the cross, and that true stigmatization was not purely a miraculous phenomenon. His argument was accompanied in the manuscripts, now held in Siena and Bologna, by a series of ink illustrations, in addition to the full-page image of four stigmatics discussed in the previous chapter. Following an exploration of Caffarini's discussion of what I term a spectrum of stigmatic symptoms and behaviours, and how these were represented in the Siena manuscript of the Libellus (Siena, Biblioteca Comunale degli Intronati, MS Segn. T.I.2), this chapter considers some Dominican panel paintings of the fifteenth century. I argue that these consciously promoted the stigmatic spectrum, encouraging the viewer to consider the different ways in which it was possible to participate in Christ's suffering.