There are two reasons for this new nomenclature: simplicity and the avoidance of hurt feelings. The Greek-letter labelling proposed by the WHO is therefore an official attempt to provide the convenience of simple, uncontroversial monikers. As for the desire to avoid hurt feelings, some may consider it oversensitivity. Greek letters are often used as parts of scientific labels, which adds authority to the idea. The next letters on the list, if it comes to it, which it probably will, are epsilon, zeta, eta and theta.
The rash is therefore an attempt to avoid hurting feelings.
( z0 infer :ARG1 ( z1 attempt :ARG1 ( z2 avoid :ARG1 ( z3 feel :ARG2-of ( z4 hurt ) ) ) :domain ( z5 rash ) ) )
(z0 / infer-01
    :ARG1 (z1 / attempt-01
              :ARG1 (z2 / avoid-01
                        :ARG1 (z3 / feel-01
                                  :ARG2-of (z4 / hurt-01)))
              :domain (z5 / rash)))
The rash is therefore an attempt to avoid hurting feelings .
z0 :ARG1 z1
z1 :domain z5
z1 :ARG1 z2
z3 :ARG2-of z4
z2 :ARG1 z3