Table 1.

Epidemiological studies linking bullous pemphigoid and neurological morbidity.

Reference	Country of study	Type of study	Number of BP cases in study	Neurological disorders associated to BP
Foureur et al., 2001 [36]	France	Retrospective case control	46	Senile dementia/Alzheimer Cerebral stroke
Stinco et al., 2005 [45]	Italy	Retrospective	238	Multiple sclerosis Parkinson's disease
Cordel et al., 2007 [37]	France	Retrospective	341	Dementia Cerebral stroke Parkinson's disease or parkinsonism
Jedlickova et al., 2010 [38]	Czech Republic	Retrospective case control	89	Dementia Cerebral stroke
Taghipour et al., 2010 [39]	UK	Retrospective case control	90	Cerebrovascular disease Dementia
Langan et al., 2011 [40]	UK	Retrospective population based case-control	868	Dementia Parkinson's disease Stroke Epilepsy
Bastuji-Garin et al., 2011 [41]	France	Prospective case control	201	Severe cognitive impairment (MMSE < 17) Parkinsons' disease Uni- or bipolar disorder Long-term neuroleptic drug use
Chen et al., 2011 [42]	Taiwan	Retrospective population based case control	3485	Dementia Stroke Schizophrenia Epilepsy Parkinson's disease