Case Report: Positive outcome of medical leeches (hirudotherapy) for venous congestion
P.Brzezinski1, C. Solovan2, AChiriac3 ,LFoia4
1. Head of Department of Dermatology, 6th Military Support Unit, Ustka, Poland
2. Head of Department of Dermatology, University of Medicine V Babes, Timisoara, Romania
3. Head of Department of Dermato-Physiology, Apollonia University Iasi, Strada Muzicii nr 2, Iasi-700399, Romania
4. Head of Department of Dermatology, Grigore T. Popa University of Medicine and Pharmacy, Strada Universitãtii 16, Iasi, Romania
Corresponding author: Piotr Brzezinski, Emailfirstname.lastname@example.org
A 65 year Caucasian woman was seen for numerous, oval- to-round, well-de ned 1.5 to 3.5 cm erythematous plaque- lesions, with central umbilication (central black eschar), intensely itching, distributed on both inferior limbs, (Figures 1,2,3). She admitted a history of leech therapy (3 sessions daily) 5 days prior to consultation, for chronic venous insuf ciency under the supervision of a general practitioner. The patient had no pain or any other symptom, no fever, malaise. There were no palpable lymph nodes. Moreover, no history of trauma or insect bites could be recorded. She has been treated for several years for chronic super cial venous insuf ciency with compression therapy (stockings) and micronized diosmin orally. She had no past or present trophic ulcers, just slight bilateral edema. A routine blood test was within normal limits. Echo Doppler evaluation con rmed chronic venous disease (CVD) class II and excluded venous thrombosis. Based on clinical examination, in the presence of normal investigations, we were in the position of deciding if it was a common evolution of hirudotherapy or an allergic contact dermatitis caused by the leech bite. The patient was treated with oral cefuroxime 1g daily and antihistamines for 7 days, associated to topical steroids cream class II for 2 weeks, resulting in almost complete recovery. The patient was subsequently lost to follow-up.
Figure 2: Round-oval erythematous plaques centered by small ulceration covered by black and adherent eschar on the inner surface of the right thigh
Figure 3: Close view of the lesion
Figure 4: Hirudo medicinalis
The medicinal use of leeches goes far away back in the history. Galen (130-201 AD) used the technique to remove blood and provide health to patients2 but, the rst use of leeches for medical purposes appears on the wall of an Egyptian tomb (1567-1308 BC)1. During centuries it became a popular remedy for many medical problems, but declined after the mid-nineteenth century due to the development of new medicine. In 2004, this treatment procedure received the approval of the Food and Drug Administration (FDA) in the USA2.
Leeches belong to the Phylum Annelids; they live in water (lakes, streams, seas, pools) or land in tropical areas. European leech Hirudo medicinalis is used in medicine and gave the name of hirudotherapy to the medical procedure, (Figure 4).When it is applied to skin Hirudo medicinalis sucks blood directly through the external mammalian skin. At the moment of biting, saliva of the Hirudo medicinalis releases into the skin substances that induce local anesthesia and vasodilatation (with enhanced blood ow); brinase
Figure 1: Multiple lesions on the left leg
Malawi Medical Journal; 27(1): 38-39 March 2015
and anticoagulant (hirudin) to prevent clotting3. Depending on the size of the leech,a large quantity of blood can be ingested.Side effects, accidents, medical problems have been described during or after using this method. Psychological impact can be signi cant and might push cessation of the procedure, with or without anxiolytic medication.Continued and uncontrolled leech use can induce bleeding and anaemia. Allergic local reactions and anaphylaxis have been reported, induced by substances contained in saliva of leeches4. Local infections with Aeromonas spp are by far the mostdangerous complications, ranging from super cial to deep infections (cellulitis, subcutaneous abscess)5 and even septicemia8. High Resistance to rst-generation Cephalosporin, Penicillin, Tetracycline, Augmentin widely used in daily practice, have been reported recently with the recommendation of prescribing uoroquinolones6. Moreover, the multiple uses of the same leeches from one patient to another induces high risk of hepatitis and HIV transmission. The leech therapy can be used effectively for the management of various disorders. Rasi et all described 64-year-old Iranian man who presented with numerous asymptomatic multilobular oval-to-round cystic lesions3. The patient used leech therapy with positive effect. Zaidi descibes using leech therapy in a 60-year-old woman suffering from diabetic foot (she was facing the prospect of imminent amputation)7. Wound dressing was done with unripe papaya as it has a very good role in clearing necrotising area and hirudotherapy was also used in poorly healing wounds. The pain score decreased to 0-10mm on a 100mm visual analogue scale within 20days and no further pain relieving medication was required. Over a time interval of nearly 3.5months, necrotic areas disappeared and the wound was completely healed. Authors from India described a patient with nevus of Ota where leech was applied upon the lesion for ve times spanned in a period of 2 months8. A substantial reduction in color of the nevus was reported following the completion of the therapy. An interesting case was presented by TarazJamshidi et al9. The authors presented a case of leech therapy after near total amputation of the ngers. A 25-year-old patient was admitted following a sawing injury with crashed bundles of the third, fourth and fth ngers. Microvascular surgery was not performed because of crush injury. The patient was treated using leech therapy. The result was satisfactory. The third and fourth ngers were salvaged.
Besides being rare for practical dermatological activity, leech therapy raises a few questions:
-Are skin lesions “normal” reactions to leech therapy or must they be regarded and treated as an allergic contact dermatitis with the recommendation of discontinuing the therapy?
-Could the lesions be the expresssion of a consumption coagulopathy induced by substances from saliva of leeches?
-Is hirudotherapy of any help in providing relief in patients with chronic super cial venous insuf ciency class I, II in the absence of complications?
-How can be proved the value of the method by objective paraclinical investigations?
The leech therapy has unique features; the leech sucks venous blood and aids ulcer healing, and can therefore be used as an effective adjunct in the management of complicated varicose veins and venous congestion. Iranian authors showed that (in animal models) the process of
Medical leeches 39
wound healing was signi cantly faster in the group treated with leech therapy (p < 0.05) than in the group treated with the topical phenytoin10. It may be used for the restoration of normal heath through its prophylactic and palliative action. However, there is the need to develop standard procedures and scienti c parameters so that the ef cacy of leech therapy can be proved in a rational manner.
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