Vitiligo can change with the seasons
While vitiligo might appear in a regular pattern for some people, it can also spread or change colors inconsistently over the years for others. The cool display of vitiligo in this person’s arms changes with the seasons, appearing one color in the winter and another in the summer.
The truth here is that vitiligo is more visible in the summer because the brown region of the skin tans and contrasts more with the other pigmented areas. Because of how distinctive and creative this photo is, this person seems to have embraced their uniqueness, and this is something to be proud of.