American Society of Hirudotherapy

Safety Domain Index

A navigation hub for the key safety topics in medicinal-leech care. Each domain links to a patient-safe overview and a separate clinician reference.

Last Updated: June 2, 2026Reviewed by: Andrei Dokukin, MD
Safety education indexEducational reference, not medical advice

How to use this index

This page is an index, not a how-to. Each safety domain below offers two separate entry points: a patient overview written in plain language for general understanding, and a clinician reference where the detailed, professional-facing material lives. ASH publishes safety education only — it does not provide medical advice, and nothing here is a protocol for self-application.

Not a self-treatment guide

Medicinal leech therapy is a clinical procedure delivered by trained professionals. ASH does not support unsupervised or at-home use. If you are a patient, talk with your care team; the patient overviews below explain what to expect and what questions to ask.

Safety domains

Infection & Aeromonas

Why infection prevention matters with medicinal leeches and how care teams reduce that risk.

Bleeding

Some bleeding from the bite site is expected; this domain covers what is normal and when to seek help.

Anemia & transfusion

How blood counts are monitored during a course of therapy and why that monitoring matters.

Allergy & anaphylaxis

Recognizing allergic reactions and the signs that warrant prompt medical attention.

Tissue failure

Education on how clinicians watch the treated area and respond if tissue is not recovering as hoped.

Improper application

Why medicinal leech therapy is delivered by trained professionals in an appropriate care setting.

Biohazard disposal

How used medicinal leeches and related materials are handled and disposed of as regulated biohazard.

Antibiotic stewardship

The role of antibiotics in prevention and why their use is decided and managed by clinicians.

Self-use risk

Why ASH does not support unsupervised, at-home use and where to find professional guidance instead.

About this index

Patient overviews are kept free of procedural detail by design. Detailed management material — antibiotic selection, complication algorithms, monitoring thresholds, and disposal procedures — is reserved for the clinician references linked above, including the safety protocols and Aeromonas management pages. Patients can start with the patient guide.

This website provides educational information and does not constitute medical advice, diagnosis, or treatment recommendations. Medicinal leech therapy carries clinically meaningful risks and should be performed only by qualified clinicians under institutionally approved protocols. FDA 510(k) clearance for medicinal leeches is limited to specific indications; investigational and off-label discussions are labeled accordingly. For patient-specific guidance, consult a qualified healthcare provider.