Contraindications
Broken skin
Extreme sunburn
Pregnant or nursing
Metal pins and plates
For external use only
Pathological skin conditions
Weak psycho-physical condition
Not for use on or by children under 12 years old.
Heart beat regulating medication / heart complaints
Pacemakers or other battery operated and electrical implant
Neurological disorders including epilepsy or multiple sclerosis
Not for use on or by children between 12 and 17 years old without parental supervision
Skin conditions in an active state accompanied by inflammation, weeping or soreness
These are just the main ones, Always do your own Due Diligence!