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ORIGINAL ARTICLE
Year : 2010  |  Volume : 2  |  Issue : 1  |  Page : 20-23 Table of Contents     

Effective treatment of folliculitis decalvans using selected antimicrobial agents


Department of Dermatology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China

Date of Web Publication29-Jul-2010

Correspondence Address:
Zhang Xingqi
58, Zhong Shan, 2nd Road, Department of Dermatology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou - 510 080, Guangdong
China
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/0974-7753.66908

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   Abstract 

Folliculitis Decalvans (FD) is a rare neutrophilic infammation of the scalp characterized by painful, recurrent purulent follicular exudation resulting in primary cicatricial alopecia. However, unclear etiology makes FD treatment a difficult task. A wide variety of topical and systemic agents have been tried previously, with varied results. We present here a case series report of a set of 13 patients with FD on antimicrobial therapy.

Keywords: Folliculitis decalvans, antimicrobial, primary cicatricial alopecia


How to cite this article:
Sillani C, Bin Z, Ying Z, Zeming C, Jian Y, Xingqi Z. Effective treatment of folliculitis decalvans using selected antimicrobial agents. Int J Trichol 2010;2:20-3

How to cite this URL:
Sillani C, Bin Z, Ying Z, Zeming C, Jian Y, Xingqi Z. Effective treatment of folliculitis decalvans using selected antimicrobial agents. Int J Trichol [serial online] 2010 [cited 2017 Mar 29];2:20-3. Available from: http://www.ijtrichology.com/text.asp?2010/2/1/20/66908


   Introduction Top


Folliculitis Decalvans (FD) is a rare neutrophilic inflammation of the scalp characterized by painful, recurrent purulent follicular exudation resulting in primary cicatricial alopecia. The superantigens theory, [1] with an abnormal host defense mechanism is widely accepted. However, unclear etiology makes FD treatment a difficult task. A wide variety of topical and systemic agents including antimicrobials, antifungals, retinoids, corticosteroids, as well as laser depilation treatment have been tried previously, with varied results. [2],[3],[4],[5],[6],[7] We present here a case series report of a set of 13 patients with FD, who presented to our hair clinic for the past one year.


   Materials and Methods Top


Thirteen Chinese patients presenting to our hair clinic between December 2008 and December 2009 with signs and symptoms of folliculitis Decalvans, were enrolled. A detailed clinical history was taken followed by a thorough scalp examination and routine systemic examination. The severity of the disease was assessed based on the clinical presentation, type of skin lesions, the area involved, and duration of the disease.

Pus swabs from intact pustules were taken for culture and antibiotic sensitivity test from six cases. Scalp biopsies were done on seven patients with signed consents. The protocol of antimicrobial therapy was based on the severity of the disease and antimicrobial sensitivity results. Patients with mild FD were started on Minocycline 100 mg twice daily, orally. Patients with moderate FD were given a combination of Minocycline 100 mg twice daily and Rifampicin 150 - 300 mg twice daily. The adjuvant drugs used were topical fusidic acid or mupirocin, selenium sulfide shampoo, oral compound glycyrrhizin, and zinc gluconate. The patients were reassessed after two weeks. Patients with deteriorating clinical symptoms, development of new skin lesions, and expansion of the involved area were given additional Clarythromycin 250 mg twice daily and/or Acitretin 10 mg once a day. The patients were assessed weekly or biweekly until satisfactory disease control, followed by monthly review.


   Results Top


The results are listed in [Table 1]. There were 11 males (85%) and two females (15%) in the patient group, 15 to 66 years of age, with a mean age of 30.1±13.4 years. The course of the disease varied from two weeks to four years. The chief complaints were mainly painful scalp lesions accompanied by varying degrees of pruritis and hair loss. Androgenetic alopecia, acne, and atopic dermatitis were found in three, three, and one patient, respectively. No similar family history was found in any of the patients. 84.6% (11 cases) had vertex involvement. 61.5% (8 cases) had occipital involvement, among seven cases which overlapped with vertex involvement. The affected scalp area ranged from less than 5% to 20%. The skin lesions varied in morphology, they ranged from papular lesions with no exudation to pustular, boggy nodular masses with mild serous exudation on areas of hair loss ranging from 0.5 cm to < 2 cm in diameter. Tufted hairs were present in two patients. Eight cases were considered as mild and the rest were considered as moderate FD cases. Full blood count of the patients did not show any significant abnormal deviations. IgE was elevated in two patients (one of whom had a history of atopic dermatitis). Autoimmune antibody titers, HIV, and RPR / TPPA titers were negative in all the patients. Erythrocyte sedimentation rate (ESR) was not elevated in any of the patients. Seven cases who underwent histopathological examination were all confirmed as FD with typical folliculitis and features of scarring alopecia. Staphylococcus aureus, Citrobacter koseri, and coagulase-negative staphylococcus were grown in three cases, but no microorganisms were found in the other three cases. The duration of treatment varied from one month to more than one year. Minocycline 100 mg bid, given as monotherapy for an average of 5.7 weeks was able to clear the scalp lesions in seven patients; only one of them needed two weeks of oral Acitretin, and one of them had the disease relapse after eight months. A combination of Minocycline and Rifampicin for an average of 11.7 weeks was effective in treating three patients, in which Minocycline failed as a monotherapy. Combination of Clarythromycin and Rifampicin for an average of 10 weeks was also effective in clearing scalp lesions in two patients. Patient 11 [Figure 1],[Figure 2],[Figure 3] needed combinations of different antimicrobials with aggressive adjuvant therapy, as he neglected treatment in the beginning and his condition worsened significantly with scalp scarring. Only patient 11 had mild side effects from Rifampicin (nausea and vertigo); it was substituted by Clarythromycin after one month of therapy.


   Discussion Top


In our group of patients, 85% were males, which concurred with the male predominance in other studies as well (83%). [4] Among patients in whom bacterial and fungal cultures were carried out, only half of them yielded a positive result, and Staphylococcus aureus was not always the only pathogen found. However, these results could have been affected by contamination during the sampling procedures. Tufted hair was not a common finding in our patients, with an occurrence of 15% among all patients. Therefore, it could be a sign of severity of the disease and not an element for diagnosis.

Although non-antibacterials have also been used in the treatment of FD, the main aim has mainly been focused on the eradication of S. aureus. Rifampicin, which acts by inhibiting DNA-dependent RNA polymerase activity in susceptible cells, is very effective against S. aureus. Minocycline hydrochloride, which is a semi-synthetic derivative of tetracycline, has a bacteriostatic effect, as it inhibits protein synthesis of Gram negative and Gram positive microorganisms, including S. aureus. Some studies have already proved the effectiveness of Rifampicin, [4],[8],[9] however, due to rapid emergence of antibiotic resistance, it has been used in combination with other antimicrobials. The use of Clarythromycin, a macrolide antimicrobial, which binds to the 50S ribosomal subunit of susceptible microorganisms and inhibits protein synthesis, has also been suggested earlier. [1] We thus preferred to use Minocycline as the drug of first choice, while Rifampicin was used additionally when Minocycline monotherapy was ineffective. In one of our patients, Rifampicin was substituted by Clarythromycin due to mild side-effects; Clarythromycin proved to be as effective.

The antimicrobials used in this study are only a few of the large variety available for successful FD treatment, however, each drug needs proper tailoring according to the patient's condition, along with clinical assessment and laboratory investigations. Cosmetically acceptable results have been attained in most of the patients in a relatively short time. The antimicrobials used are also safe and their side-effects when used in separate short courses are mild. Most of our patients (9/13) are still disease-free with good hair regrowth, while the others are being controlled either by topical (2/13) or systemic antibiotics (1/13). Thus, early and effective treatment of FD is needed to prevent progression of the disease and scarring of the scalp skin.


   Conclusion Top


Minocycline is a very effective antimicrobial agent in mild cases, but administration of Rifampicin or Clarythromycin in combination with Minocycline is helpful in moderate or resistant cases. An early treatment of FD, with proper antimicrobials, is important for preventing total destruction of hair follicles leading to scarring alopecia.

 
   References Top

1.Powell JJ, Dawber RPR, Gatter K. Folliculitis decalvans including tufted folliculitis: Clinical, histological and therapeutic findings. Br J Dermatol 1999;140:328-33.  Back to cited text no. 1      
2.Whiting DA. Cicatricial alopecia: Clinico-pathological findings and treatment. Clin Dermatol 2001;19:211-5.  Back to cited text no. 2  [PUBMED]  [FULLTEXT]  
3.Annessi G. Tufted folliculitis of the scalp: A distinctive clinicohistological variant of folliculitis decalvans. Br J Dermatol 1998;138:799-805.  Back to cited text no. 3  [PUBMED]  [FULLTEXT]  
4.Chandrawansa PH, Giam Y. Folliculitis decalvans - a retrospective study in a tertiary referred center, over five years. Singapore Med J 2003;44:84-7.  Back to cited text no. 4      
5.Abeck D, Korting HC, Braun-Falco O. Folliculitis decalvans: Long-lasting response to combined therapy with fusidic acid and zinc. Acta Derm Venereol 1992;72:143-5.  Back to cited text no. 5  [PUBMED]    
6.Gemmeke A, Wollina U. Folliculitis decalvans of the scalp: Response to triple therapy with isotretinoin, clindamycin,and prednisolone. Acta Dermatovenerol Alp Panonica Adriat 2006;15:184-6.  Back to cited text no. 6  [PUBMED]  [FULLTEXT]  
7.Parlette EC, Kroeger N, Ross EV. Nd:YAG laser treatment of recalcitrant folliculitis decalvans. Dermatol Surg 2004;30:1152-4.  Back to cited text no. 7  [PUBMED]  [FULLTEXT]  
8.Kaur S, Kanwar AJ. Folliculitis decalvans: Successful treatment with a combination of rifampicin and topical mupirocin. J Dermatol 2002;29:180-1.  Back to cited text no. 8  [PUBMED]    
9.Brozena SJ, Cohen LE, Fenske NA. Folliculitis decalvans--response to rifampin. Cutis 1988;42:512-5.  Back to cited text no. 9  [PUBMED]    


    Figures

  [Figure 1], [Figure 2], [Figure 3]
 
 
    Tables

  [Table 1]


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