This month, getting a handle on aggressive multiple sclerosis. Suresh Menon and Helen Tremlett, both from the Department of Medicine, University of British Columbia, talk us through their recent step towards a definition of the disease.

And Parkinson's patients who are disappointed after deep brain stimulation, despite gaining motor benefits and quality of life improvements. Catherine Lewis and Franziska Maier, both from the Department of Neurology, University of Cologne, explain how to predict who may end up feeling negative about the procedure, and how to support them.

Read the papers:

Characterising aggressive multiple sclerosis bit.ly/168RLWo

Patients’ expectations of deep brain stimulation, and subjective perceived outcome related to clinical measures in Parkinson's disease: a mixed-method approach bit.ly/Hlup68