1. Functional Neurologic Symptoms: Assessment and Management
Jon Stone, MB,ChB, PhD, FRCP, Alan Carson, MB,ChB, MPhil, MD, FRCP 
Neurologic Clinics 
Volume 29, Issue 1, Pages 1-18 (February 2011)
DOI: /j.ncl
Copyright © 2011 Elsevier Inc. Terms and Conditions

2. Fig. 1
Hoover sign is most easily demonstrated in the sitting position.
(Reproduced from Stone J. The bare essentials: functional symptoms in neurology. Pract Neurol 2009;9:179–89; with permission of BMJ publications.)
Neurologic Clinics  , 1-18DOI: ( /j.ncl )
Copyright © 2011 Elsevier Inc. Terms and Conditions

3. Fig. 2
A dragging gait with external or internal hip rotation is characteristic of functional weakness.
Neurologic Clinics  , 1-18DOI: ( /j.ncl )
Copyright © 2011 Elsevier Inc. Terms and Conditions

4. Fig. 3
Functional/psychogenic dystonia typically presents with a clenched fist or an inverted plantarflexed ankle.
(Reproduced from Stone J. The bare essentials: functional symptoms in neurology. Pract Neurol 2009;9:179–89; with permission of BMJ publications.)
Neurologic Clinics  , 1-18DOI: ( /j.ncl )
Copyright © 2011 Elsevier Inc. Terms and Conditions