American Society of Hirudotherapy

New Dermoscopic Sign in Leech Therapy

Research article published in Indian dermatology online journal (2023)

Last Updated: March 18, 2026Reviewed by: ASH Editorial Board
Research article — evidence reviewArticle reference
Clinical TrialsBhat N, Bhat Y · Indian dermatology online journal, 2023

Abstract

Leeches are hermaphroditic parasites of phylum Annelida and class Hirudinea. A minority of these are sanguinivorous and the cause of human morbidity. Historically, leeches have been used for medicinal purposes with the earliest recorded being 1500 BC. Medicinal leeches use their suction discs for locomotion, adhesion to the host, and, in the case of the anterior disc, also for blood ingestion. Dermoscopy is a new non-invasive tool that can help in the diagnosis of miscellaneous skin conditions. The new dermoscopic sign of leech bite i.e., the Mercedes Benz Logo sign which corresponds to the retractable tripartite jaw apparatus of the leech, can easily help in the quick diagnosis of the condition and referral of the patient for proper management without any delay.

Abstract sourced from PubMed (NCBI) for the cited record. See the original publication for the authoritative version.

Publication typeCase ReportsJournal Article

Summary

Leeches are hermaphroditic parasites of phylum Annelida and class Hirudinea. A minority of these are sanguinivorous and the cause of human morbidity.

Why This Matters for Hirudotherapy

Contributes clinical evidence for the therapeutic application of leech therapy.

Citation

New Dermoscopic Sign in Leech Therapy.

Bhat N, Bhat Y · Indian dermatology online journal, 2023

Added to ASH library: March 18, 2026 · Site last updated: March 18, 2026

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.

New Dermoscopic Sign in Leech Therapy | ASH