Pruritus is a major symptom of several dermatological diseases but has limited therapeutic options available. Animal models replicating the pathophysiology of pruritus are needed to support the development of new drugs. Induction of pruritus by chloroquine (CQ) in mice is widely used, although, as with similar models, it has low throughput and does not distinguish between antipruritic effects a...

Phosphodiesterase (PDE) 4 inhibition is a well-known anti-inflammatory mechanism, but the development of PDE4 inhibitors has been hampered by side effects such as nausea and emesis. Local delivery of a PDE4 inhibitor to the site of inflammation may overcome these issues. The purpose of this study was to assess the therapeutic potential of E6005 (methyl 4-[({3-[6,7-dimethoxy2-(methylamino)quinaz...

Itch is an aversive sensory experience and while systemic therapies, such as acupuncture, have shown promise in alleviating itch in patients suffering from chronic itch, their antipruritic mechanisms are unknown. As several lines of evidence implicate brain-focused mechanisms, we applied functional magnetic resonance imaging and our validated temperature-modulation itch model to evaluate the un...

Substance P (SP) is a member of the tachykinin peptide family. Hemokinin-1 (HK-1) was recently identified as a new mammalian tachykinin peptide. SP and HK-1 consist of undecapeptides and share a common carboxyl-terminal (C-terminal), Phe-Xaa-Gly-Leu-Met-amide motif, and more varied amino-terminals (N-terminal). The function of SP in the pain system of the spinal cord has been examined in detail...

Resorcinol, also known as resorcin (1,3-dihydroxybenzene; CAS no. 108-46-3), is an important ingredient of Castellani’s paint solution, an antifungal preparation that is commonly used in daily dermatological clinical practice. Apart from its use in hair dyes, resorcinol is also used in several other topical preparations, because of its antipruritic, keratolytic and antimycotic properties. Sodiu...

Specific dermatoses of pregnancy refer to a group of skin diseases that are encountered predominantly during or immediately following pregnancy. This is a case report of pruritic urticarial papules and plaques of pregnancy developing in a 29-year-old lady primigravida lady is associated with overt diabetes with hypothyroidism, pre-eclampsia and anemia. The diagnosis of PUPPP is a clinical one, ...