After you define the starting point for the problem, the doctor will want to establish the sequence of events from that time until the present.
detachment
destructive
detergent
deter
detain
detached
detox
detonator
detriment
devastate
detrimental
development
detention
domestic
develop
dollhouse
domicile
dominion
dolly
dominant
donation
dominoes
doomsday
doormat
dopey
dorky
doom
domineering
done
doodle
doorman
doorbell
door
donkey
dominate
drink
dust
closely
dangerous
coffee
clothing
clock
clearly
fat
favorite
driver
event
desk
flight
drew
fifty
cry
fence
climate
forget
cow
flow
fourth
generally
friendly
flower
immediately
instance
giant
golden
hung
grain
industry
hurry
lake
knife
handle
height
leaving
likely
mass
mile
leader
observe
nearest
nobody
newspaper
muscle
nest
distillery
distinguish
distill
distinguished
distance
dissociation
distention
dissolute
distend
distinct
distasteful
distinctive
distinguishable
distant
dissolve
disk
disinterested
dislocation
dislike
dislodge
dislocate
dismal
disjointed
diskette
disloyalty
dismantle
dismiss
dismissal
dismally
dismember
disloyal
dismay
divorced
docket
docile
doctrine
dock
division
divert
diversion
dabble
daffodil
damper
damp
damn
dally
demon
demonstrate
demonstration
demolish
demolition
demonstrator
diverge
divider
divorce
diverse
dizziness
divulge
dizzy
doctorate
documentary
documentation
dodge
dogma
dogwood
doldrums
dogmatic
doleful
dollar
dolphin
domain
domesticated
dollop
domination
dosage
downcast
downhill
downstream