<a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;LSD_and_schizophrenia" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;LSD_and_schizophrenia</a><p>Look in the references:
&quot;Four additional studies found post-LSD psychotics with prior psychosis but also patients in whom the drug precipitated psychosis without a prodrome ... One group reported cases of psychosis following a single dose, suggesting a peculiar vulnerability to the drug in certain individuals. A review of this problem concluded that prior illness was evident in many, but not all, psychoses following LSD &quot;<p>Your general gist seems to be correct (that it&#x27;s a rather low risk for people without history), but &quot;no one&quot; seems to be incorrect. Which makes sense - LSD&#x27;s a powerful medication. And for comparison, this happens with stuff they give to kids, like Ritalin and speed.