A 70-year-old man suffering from severe depression and anxiety caused by chronic Lyme disease and related tick-borne infections found relief after taking small doses of psilocybin mushrooms three times a week. Within days of starting treatment, his mood improved dramatically, and he remained symptom-free for two years. This case suggests that psilocybin’s ability to reduce inflammation in the brain may help patients with infectious-caused psychiatric conditions who cannot tolerate standard medications.