Heat rash is caused by blockage of the pores that lead to the sweat glands, it actually can occur at any age but is most common in the very young child in whom the sweat glands are still developing.
definition
definitive
deflection
definitely
deflation
deflate
deflect
definitively
deform
deficient
defile
definite
deftly
defraud
deformation
deformed
deforestation
dehydration
deformity
dejected
dehydrated
degrading
dejection
delegate
delay
dehydrate
delegation
delayed
dejectedly
delectable
deliberately
deliberation
delete
deliberate
deletion
delicacy
delicate
deluded
demagogue
demands
delve
demanding
demand
demean
demented
demagogic
demeanor
deluxe
delivery
delusion
deliriously
demeaning
deluge
demerit
demise
deliver
delighted
delicatessen
delineate
delicious
depot
depreciation
deprived
depress
deprivation
deputy
depression
deplore
deployment
deport
deportation
deplorably
deploy
depletion
deposit
depreciate
dependent
depose
dependence
depraved
depravity
deplorable
depict
dependency
deplete
depressing
depressed
deride
derive
deranged
derivative
derision
derivation
descend
derogatory
descendant
derailment
deprive
derby
derelict
depth
derail
desecrate
desecration
describe
description
descriptive
descent
deserted
designate
deserter
deserving
desegregate
desegregation
designation
designer
deserve
design
desert
designing
desolate
desperate
desolation
despite
despondent
desperation
desktop
despicable
despondently
despotic
desperately
despise
despot
despair
dessert
destitute
destitution
destruction
destination
destiny
destined
destroyer
deteriorate
detente
detail
destroy
determination
determined
deterrence
deterioration
deterrent
determine
detonation
detest
determiner
detonate
detective
discipline
disciplined
disciplinarian
disclaimer
discourse
discouraged
disband