Both of these men had syphilis" poster
The pattern
This still is filed under Public health warning.
Define
A warning designed to change a health behavior (stop, screen, stay home), not to sell a brand.
Mechanism
Fear with a next step. The threat is specific. The action is doable today. Fear without an action is cruelty.
Verdict
The risk is real and the action is clear. Official or civic voices help.
Why it works
It uses a stark 'before/after' or 'path A/path B' dichotomy to dramatize the consequences of ignoring medical treatment. The contrasting colors (bright yellow vs. dark blue) reinforce the positive and negative outcomes.
Steal this when
You need to illustrate the severe long-term consequences of failing to take a simple, immediate action.