Hi Vince,
No danger as long as the patient is not numb so they can give you feedback on the warmth of the setting and distance from tissue you are applying laser energy (980nm) to.
It ought to feel good to the patient within 60 seconds. If not, discontinue.
980 nm is a VERY good bistimulation and VERY deep penetrating wavelength (14cm) through tissue at .25 watts if using a LLLT laser.
Bob