Display Screen or Portion Thereof with a Transitional Mental Health Graphical User Interface

FIG. 1 is a first image of a display screen or portion thereof with a transitional mental health graphical user interface showing my new design;

FIG. 2 is a second image thereof;

FIG. 3 is a third image thereof;

FIG. 4 is a fourth image thereof; and,

FIG. 5 is a fifth image thereof.

The broken lines and broken line text in FIGS. 1 - 5 illustrate portions of a display screen or portion thereof with a transitional mental health graphical user interface and form no part of the claimed design. The appearance of the transitional image sequentially transitions between the images shown in FIGS. 1 - 5 . The process or period in which one image transitions to another image forms no part of the claimed design. The stippling patterns of FIGS. 2 , 3 , 4 , and 5 illustrate a contrast in appearance.