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We present the first case report of peritoneal dialysis (PD)-associated peritonitis due to Gibellulopsis nigrescens, with the same pathogen detected in her caregiver's tinea capitis. This confirms that touch contamination from the caregiver's infection was the primary source of this rare organism. The species of pathogen causing peritonitis and her caregiver's scalp lesions were identified by DNA barcoding. The patient responded well to timely PD catheter removal and a 2-week course of systemic amphotericin B deoxycholate. Preventive strategies should prioritize hygiene practices, including maintaining adequate personal hygiene and practicing thorough hand washing, to mitigate the risk of touch contamination and subsequent infection with fungal pathogens.