European journal of pain : EJP
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People engaged in masochistic behaviour (MB) seek to experience pain and the pleasure it evokes in sadomasochistic (S&M) sessions. The sensitivity and attitude to pain in these individuals has hardly been tested. We evaluated pain perception among these individuals and tested whether their experiences and attitudes towards pain are context-related. ⋯ MB individuals exhibited pain hyposensitivity, presumably resulting from frequent engagement in MB. Alternatively, these subjects may have a predisposition which enables this engagement. Attitudes towards pain in MB individuals are complex. They appear to be context-related with pain experienced as pleasurable and rewarding during S&M sessions, and negative but still pleasurable in everyday life.
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It is important to know the mechanisms underlying pain abnormalities associated with inferior alveolar nerve (IAN) regeneration in order to develop the appropriate treatment for orofacial neuropathic pain patients. However, peripheral mechanisms underlying orofacial pain abnormalities following IAN regeneration are not fully understood. ⋯ These findings suggest that the demyelination of MN fibres following regeneration may be involved in peripheral sensitization, resulting in the orofacial neuropathic pain associated with trigeminal nerve injury.