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Argyria Associated with Use of Systemic Colloidal Silver

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Argyria Associated with Use of Systemic Colloidal Silver Case in Point Argyria Associated With Use of Systemic Colloidal Silver Jennifer W. Baker, PharmD, BCPS; Karen L. Leidy, RN, MSN, CRNP; Kevin M. Smith; and U. Sabina Okeke, MD, BSC This patient presented to the clinic seeking treatment for the silver-blue tinge to his skin. omeopathy and home rem- CASE REPORT had taken ethylenediaminetetraace- edies have been utilized for The patient presented to the VA Ten- tic acid chelating pills for 6 months. ages. One such modality is nessee Valley Healthcare System None of these options were effective. Hsilver, which, in the past, has (VATVHS) in Murfreesboro, Tennes- Medical history was insignificant been purported as a cure for mul- see, to establish primary care. His except for smoking, which he tiple illnesses. More recently, treat- skin had a distinct silver-blue tinge, stopped 1 year prior to this visit. The ment with colloidal silver has been which was more pronounced in areas presumed melanoma lesion that he brought to national attention be- prone to sun-exposure, such as his excised never recurred. He developed cause of a patient named Paul Kara- face, upper body, and hands (Figures a right breast mass 2 months prior son, who has made appearances on 1 and 2). His chief complaint was to the initial visit and had a subse- several television programs because emotional distress related to his skin’s quent mammogram, ultrasound, and of his unusual skin discoloration.1–3 discoloration. The patient was seek- biopsy, with the final diagnosis of gy- Karason has a condition known as ing treatment options to correct his necomastia. Medications upon initial argyria—a blue-gray coloring of the skin tone. He stated that he had been visit included aspirin, niacin, and a skin caused by accumulation of me- ingesting a homemade colloidal silver multivitamin. tallic silver and silver sulfide in the solution as a form of self-treatment Vital signs, pulse oximetry, and sub-epithelial portions of the skin.4 for a presumed melanoma on his physical examination were normal. The silver deposits stimulate the pro- right ankle, which he excised without Electrocardiogram showed sinus bra- duction of melanin, causing those confirmed diagnosis. He brewed the dycardia at a rate of 56 beats per min- areas of skin that are sun-exposed to silver solution by means of electroly- ute. The following laboratory tests turn especially dark.5 Although this sis using 710 mL of distilled water, were collected: complete metabolic toxicity is relatively harmless, aside 2 silver (99%) 12-gauge wires, and panel, complete blood count, lipid from the aesthetic adverse effect, a 50-volt battery. He initially drank panel, thyroid panel, urinalysis, pros- it is, for the most part, permanent. approximately 44 mL of the cloudy tate specific antigen, and liver func- Here, we present a case involving a brown solution daily, but, eventually, tion. Mercury, lead, and arsenic blood 61-year-old white man who pre- increased his daily consumption to levels also were obtained. Laboratory sented to the clinic with symptoms 710 mL per day. He drank the solu- findings were unremarkable, except of argyria. tion from spring of 2001 through for the complete blood count, which 2003. showed normocytic anemia. The Dr. Baker is a clinical pharmacy specialist in the According to the patient, in an at- initial mental health evaluation re- anticoagulation and traveling veteran clinics, Ms. tempt to cure the silver-blue tinge of vealed intermittent anxiety, which the Leidy is a primary care provider, and Dr. Okeke is a primary care provider, all at the VA Tennessee his skin, upon coming to the VAT- patient attributed to the impact his Valley Healthcare System (VATVHS) in Murfrees- VHS, he already had tried chemical skin discoloration had on his life. He boro, Tennessee. At the time of this study, Mr. peels with salicylic acid, oxalic acid, stated that he had difficulty finding Smith was a PharmD candidate at the University of Tennessee in Memphis, and was on rotation at and glycolic acid. He also had applied employment and often was the focus the VATVHS. 3% hydroquinone skin cream and of public staring. He denied any prior JANUARY 2011 • FEDERAL PRACTITIONER • 39 CASE IN POINT mental health diagnosis or treatment. losis, malaria, lupus, syphilis, scarlet Because of the unremarkable find- fever, shingles, herpes, pneumonia, ings of his initial visit, further medical typhoid, exanthematic typhus, teta- treatment was deemed unwarranted. nus, variola, scarlatina, erysipelas, However, the patient was referred to rheumatism, candida/staphylococcus/ the dermatology department of the streptococcus infections, tonsillitis, VATVHS to explore treatment options parasites, fungus, bubonic plague, for his skin discoloration. cholera, chronic fatigue, acne, warts, At the first dermatology visit, Meniere’s disease (syndrome), whoop- punch biopsies were obtained from ing cough, enlarged prostate, peri- the right arm and neck. Results neal eczema, hemorrhoids, impetigo, showed a fine black granular pigment ringworm, recurrent boils, burns, and present in the sweat duct epithelium, appendicitis.”6 At one point, silver- fibrocytes, and collagen fibers, which containing products were in both the was probable for silver deposition United States Pharmacopeia and the (Figures 3 and 4). He was given 4% National Formulary. Over time, how- hydroquinone and his skin showed ever, all were removed (except a few a mild improvement. However, there silver topical and ophthalmic prod- was a concern that the patient would ucts that remain as prescription anti- develop ochronosis with prolonged septics and anti-infectives). Because of use of hydroquinone and, there- colloidal silver’s lack of efficacy sup- fore, other treatment options were port and the possible toxicities associ- explored. The patient was referred ated with it, the FDA declared that all Figure 1. Argyria presented as a distinct to an outside dermatology facility over-the-counter drug products con- silver-blue tinge of the skin, which was where he was given 3 test pulses of taining colloidal silver ingredients or more pronounced in areas prone to sun- 20 J, 40 J, and 60 J with an intense silver salts are misbranded and, gener- exposure, such as the face, upper body, pulsed light laser therapy—which ally, are not recognized as being safe and hands. also proved ineffective. The patient and effective.6 then was educated on potential use of Q-Switched Nd:YAG laser (at 1,064-nm). At the time of the pa- tient’s visit, this laser was unavailable and the patient was informed that he would be rescheduled when this laser became available. However, since this visit, the patient has now decided not to pursue any more laser treatments. He has refused to go back to any more dermatology visits and states he is pursuing alternative treatment options for argyria. DISCUSSION Silver has been used for centuries as a cure-all. In the past, silver-con- taining product labels have claimed to treat numerous conditions, such as: “human immunodeficiency virus (HIV), acquired immune deficiency Figure 2. Argyria presenting in the hands. syndrome (AIDS), cancer, tubercu- 40 • FEDERAL PRACTITIONER • JANUARY 2011 CASE IN POINT be a permanent condition once devel- oped. Chelation therapy has shown to be ineffective in treating argyria and treatment with intradermal injection sodium thiosulfate (6%) or potassium ferrocyanide (1%) has yielded only partial success.4 However, new emerging reports of success with laser treatment using a Q-Switched Nd:YAG Laser (1,064-nm) offer hope for more effec- tive treatment in the future.19 CONCLUSION Long-term exposure to colloidal silver, as in this case, may cause irreversible pigmentation of the skin known as argyria. Although the depo- sition of silver in the skin is uniform, the discoloration becomes more prominent in areas of the skin that are exposed to sunlight.11,14,20 This condition is almost always irrevers- ible and may cause aesthetic effects so severe that patients experience extreme embarrassment and social Figure 3. Silver granules in sweat glands. withdrawal. Studies have shown that the skin discoloration is benign; how- ever, there are a few isolated reports While it is true that there is a lack blood-brain barrier. The highest con- of neurologic deficits, renal problems, of scientific support for the efficacy centrations of silver are found in the and hepatic complication associated of silver, there also is a lack of scien- skin, liver, spleen, and adrenal glands, with argyria and silver poisoning.21 tific evidence proving its toxicities. with lesser depositions being in the In addition, because of the blue-gray Although most toxicity studies to muscles and brain.4 skin discoloration, symptoms of date have been performed in animal The differential diagnosis for other disease states can be masked or models, there have been some case blue-gray discoloration of the skin misdiagnosed. reports of toxicities in humans. The includes exposure to other heavy While there are no effective treat- most common and benign toxicity is metals besides silver, such as gold, ment options to date for systemic argyria, which results in the blue-gray mercury, bismuth, arsenic, and argyria, decreasing sun exposure and discoloring of the skin and mucosa. lead.11–13 Other causes to be con- implementing sun protection can However, beyond this, there are a few sidered include central cyanosis, help reduce the severity of blue-gray case reports of neurologic toxicities, methemoglobinemia, melanosis sec- discoloration on exposed areas.11 such as vertigo, gait disturbances, ondary to widespread melanoma, Treatment of localized argyria using weakness, hyposmia, hypogeu- hemochromatosis, Addison’s disease, a Q-switched Nd:YAG laser has been sia, and seizures, as well as possible chlorpromazine, amiodarone, and reported to be successful,22 as the kidney and gastric toxicities.4,7–10 In antimalarial therapy.12–16 Discolored mechanism may be similar to those animal models, research shows that nails, often present in generalized involved in the treatment of conven- silver deposits widely throughout the argyria, also may be the result of tional or amalgam tattoos.23,24 How- body in organs, including the skin.
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