my only concern would be keeping kids away from dust and chips.
There is a combination of factors that come into play... A few questions. children in the house? house built before 1978? how many square feet are you painting interior/exterior? business on premises? tested positive by a licensed inspector? You can probably guess what happens next unless all of your responses are no.
You are going to be dealing with Federal and State regs on this deal. It's probably best to hire a lead certified, licensed contractor who will provide you with an abatement scope of service and notification as required.
Unknown test but door was professionally installed and they did abatement, No kids, built 1958, 6 inches of wood on exterior side of a 16x7 door so, 6" x (7'+16'+7') = 15 sq. ft.
The good.... You are under the 20 sq feet exterior rule. You don't have young children as residents. The bad.... Yep, that's deteriorating paint looks like chalking and chipping (lead indicators). There is a stipulation for exterior molding, trim gingerbread work and the like that says something like "limited to 10% peel or chipping".
I would go with the 10% rule and wear a mask.... There is no government regulation that will substitute for common sense.
Less than 10 percent is chipping and only that will be removed... i'm not trying to be on the cover of Better Homes and Gardens.... just appease the mother-in-law and prevent rot.