epilepsy
arrhythmia esp brady
ischemic brain ... acute and chronic esp totter backwards 
Parkinson's esp on turning or if.no tremor 
inner ear ..... bppv (vertigo. diagnose with hallpike do epley manoeuvre ) meniere 
peripheral neuropathy 
arthritis  osteoporosis 
myopathy ... do quad exercise 
anaemia
postural hypotension 
hypo ... k na glc ca 
sepsis
dementia risk behavior ... post hypo T 
normal pressure hydroceph ataxia incontinence memory loss 
AS

anti hypertensive steroid statin (uncommon ?) sedatives antipsychotic (postural hypotension Parkinson's )
alcohol
inc risk if on 4 or more drugs 

trip (front of foot ) foot drop   visual  slip (back of foot )
visual cataracts bifocals (depth perception contrast ) 
footwear

just went ... syncope no attempt to save themselves 
situational syncope (toilet ) 
cardio inhibitory .... stop drugs or pace 
vago depressor 15 mm hg hard to diagnose and treat 

environment rugs pets 

light headed cvs palps LOC  
unsteady Neuro LOC with incontinence and confusion tremor gait lower limb problems
vertigo ent 

fludrocrtisone with postural hypotension it