Post by Paul Yungst
Copyright (c) 2009 Paul Yungst
A fungal infection of the toenails or fingernails is called Onychomycosis. The nail bed and plate under the surface of the nail grow to be infected, resulting in thickening and discoloration of the nail plate and damage to the underlying nail bed.
Onychomycosis is the most common of all diseases of the nails. It is estimated that in North America, the incidence is as high as 13% and that over 25 million Americans suffer from fungal toenails. The incidence of Onychomycosis is also greater in older adults, and up to 90% of the elderly may be affected. Men are far more commonly infected than girls.
Those with chronic diseases such as diabetes and circulatory issues, and those with disorders that suppress the immune program are particularly susceptible. Extra risk aspects contain trauma to the nails, family history, a warm climate and tight shoes.
Causes
Onychomycosis is caused by three kinds of fungi: dermatophytes, yeasts and nondermatophyte molds. Fungi are simple parasitic plant organisms that do not want sunlight to grow. Toenails are specially susceptible simply because fungi prefer dark damp locations. Swimming pools, locker rooms, and showers typically harbor fungi. Chronic diseases such as diabetes, difficulties with the circulatory program, or immune deficiency illness are risk factors. A history of Athlete's Foot and excess perspiration are also risk aspects.
Diagnosis
There are numerous conditions that mimic the appearance of fungal toenails, and it is vital to confirm the diagnosis of fungus prior to initiating treatment. These other conditions incorporate candida, contact dermatitis, lichen planus, psoriasis, subungual tumor, traumatic onychodystrophy, yellow nail syndrome, amelanotic melanoma, granuloma and melanoma. In order to confirm the diagnosis of onychomycosis, a careful history, clinical examination and culture or microscopic examination of the involved nail really should be performed.
Onychomycosis can be present for years without causing discomfort or disturbing symptoms. Normally, the nail becomes thicker and changes to a yellowish-brown. Foul smelling debris may collect under the nail. The infection can spread to the surrounding nails and even the skin.
Treatment
Onychomycosis is very challenging and sometimes impossible to treat, and therapy is often lengthy-term. In order for a fungus to grow it should produce a assortment of enzymes, proteins which are responsible for acting as catalysts to promote reactions at the cellular level. Existing therapy is developed to inhibit the enzymes within the fungus, and consists of topical remedies that are applied directly to the nails, and oral systemic medications. As the fungus overtakes the nail, the nail slowly dies and thickens, producing it tough for topical medications to penetrate the nail bed. Subsequent damage to the nail bed outcomes in decreased blood supply, making it tough for oral medications to get to the infection in high enough concentration in order to destroy the fungus. Another factor which makes treatment challenging is recontamination of the nail considering that the fungus may possibly thrive in the warm moist environment discovered inside shoes.
Topical therapy is reserved for only the mildest instances, and has about a 10-15% cure rate. Very first and second generation oral antifungals such as Griseofulvin and Ketoconazole are problematic, and there are typically high relapse rates of 50-85%. In addition, treatment ought to be continued for a lengthy duration (10-18 months for toenails), with monthly laboratory monitoring for a number of side effects, such as liver toxicity. Individuals taking these medications should also abstain from alcohol consumption.
In the past couple of years, newer oral antifungal agents have been developed, and include itraconazole (Sporanox), terbinafine (Lamisil), and fluconazole (Diflucan). These agents, when taken orally for as small as 12 weeks, bring about better cure rates and fewer side effects than either Griseofulvin or Ketoconazole. The most typical side effect is stomach upset. Patients taking oral antifungal therapy need to have a complete blood count and liver enzyme workup every single four to six weeks. Terbinafine in certain has markedly much less toxicity to the liver, 1 of the a lot more severe side effects of the older agents, Griseofulvin and Ketoconazole.
Numerous over the counter topical preparations have been developed and touted to purportedly destroy the fungus and restore typical nail growth, in response to the relatively low success rate, risk of side effects and high price of the prescription antifungals. No scientific studies support the bold claims and patients' personal experience touted by manufacturers and distributors of these treatments. These over the counter preparations and therapies consist of Tea Tree Oil, Tea Tree Oil mixed with Lavender Oil, Listerine mouthwash, diluted apple cider vinegar, Oregano and olive oil mixture, alpha hydroxyl acid creams, baking soda scrub, diluted Clorox bleach and Vick's VapoRub. In the 29 years that I have been treating onychomycosis, I've encountered a number of patients who've related stories about a friend or relative who utilised 1 of these therapies with success, nonetheless, I have by no means had a patient claim that they personally had success although I have observed some positive outcomes with Thymol and Miconazole (Fungoid tincture).
Laser Therapy
A new technology has lately been developed using a laser beam of near infrared light to destroy the fungus at the cellular level. This has shown great promise in the treatment of Onychomycosis and is currently pending FDA approval for treatment of this condition. Recent clinical studies making use of this modality have demonstrated a 70-80% cure rate. Anesthesia is not required when performing this procedure, and medications are normally not employed in combination with laser therapy, therefore minimizing side effects and issues of compliance.
The greatest suggestions is to consult your podiatrist to confirm the diagnosis of onychomycosis prior to initiating any treatment. As soon as the diagnosis is confirmed, treatment really should consist of medications or techniques that have been scientifically proven to inhibit the growth of the fungus. You should then be examined on a typical basis to monitor for doable side effects and to document the status of your nail condition.
About the Author
Dr. Paul Yungst is at present a managing partner of the Sarasota Foot Care Center (http://www.sarasotafootcarecenter.com), who has practiced podiatry in Sarasota considering that 1982. He serves as the podiatric medical consultant and author of the podiatric knowledge base for MD Logic World Wide Electronic Medical Records, and has published many investigation papers.
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