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Papers of the Week
Phenotype of new daily persistent headache: subtypes and comparison to transformed chronic daily headache.
Authors
Cheema S, Stubberud A, Rantell K, Nachev P, Tronvik E, Matharu MAbstract
It is unknown whether new daily persistent headache (NDPH) is a single disorder or heterogenous group of disorders, and whether it is a unique disorder from chronic migraine and chronic tension-type headache. We describe a large group of patients with primary NDPH, compare its phenotype to transformed chronic daily headache (T-CDH), and use cluster analysis to reveal potential sub-phenotypes in the NDPH group.