Journal of the Saudi Society of Dermatology & Dermatologic Surgery最新文献

Background

Acne is a common disease yet people have a lot of misconception regarding its causes and treatment.

Methods

A cross-sectional, self-administered questionnaire study was conducted on a population in Jeddah.

Results

311 responded to the questionnaire. 64.5% suffered from acne. 85.6% think that more information about acne would be helpful. Diet 28.4% had the highest percentage as a cause of acne followed by bacteria 20.7% then poor hygiene 15.4% while 28.4% did not know the cause. Stress 58.4% and certain food 34.1% were the most believed factors to aggravate acne. Repeated frequent facial wash was thought to improve acne in 58.4%, while 63.3% thought it is a curable disease. Acne was believed to be a serious health problem by 53.82%. The younger age group thought that acne would cause depression and increase suicidal attempts more than individuals above 25 years of age. Regarding the psychological impact of acne, depression was believed to be a psychological consequence in 79.7% of the respondents, 71.7% agreed about its detrimental effect on social relationship and 55.8% agreed about its effect on marriage.

Conclusion

The study revealed that there is an actual defect in the general knowledge about acne regarding its causes and treatment.

Objective

To evaluate the factors that support the hypothesis in favor that pityriasis alba might progress into vitiligo.

Patients and methods

This observational case series study was done in Department of Dermatology-Baghdad Hospital during January 2008–September 2009. History and examination were done. Koebner’s phenomenon was carried out for all patients on the hidden areas by blunt object, and watched for 1–3 months to observe the appearance of leukoderma.

Results

One hundred thirty-four patients with pityriasis alba were included, their ages ranged from 2 to 15 (7.9 ± 3.3) years, family history for vitiligo was positive in 26 (19.4%) patients. Nineteen (14.17%) patients had coexistence of pityriasis alba and vitiligo lesions and showed positive wood’s light examination for vitiligo, 11 of 19 (57.89%) patients had positive family history for vitiligo. Only 32 (23.88%) of 134 patients had continued the study and follow-up, 14 (43.75%) patients, showed progression of their original pityriasis alba lesion into vitiligo. Also, 11 (34.35%) had positive Koebner’s phenomenon and 10 (31.25%) patients had positive family of vitiligo.

Conclusions

This study confirmed that pityriasis alba might change into vitiligo by following findings: close association between pityriasis alba and vitiligo, high positive family history of vitiligo among patients with pityriasis alba, high percentage of pityriasis alba progressed to vitiligo and Koebner’s phenomena had a high frequency among patients with pityriasis alba.

Background

Granulomatous dermatoses frequently present a diagnostic challenge as an identical histologic pattern may be produced by several causes, and conversely, a single cause may produce several histologic patterns. The present study aims at diagnosing facial granulomatous dermatoses based on combination of clinical and histopathological features and evaluating their correlation.

Methods

Archival records were retrieved and clinically suspected and/or histopathologically diagnosed facial granulomatous dermatoses cases were taken as study material. Clinical and histopathological data was tabulated and concordance rate was calculated.

Results

Out of 832 skin biopsies, 64 were from face and 18 were of facial granulomatous dermatoses. Age ranged 13–55 years with male to female ratio 1.6:1. Majority (88%) were of infectious etiology, leprosy being maximum i.e. 10/18 cases (55%) and borderline tuberculoid outnumbered all other categories with 7/10 cases (70%). Histopathologically, 14 cases (77.78%) had epithelioid granulomas and two each of histiocytic and mixed inflammatory type. Ziehl–Neelsen stain was positive in three cases (16.67%). Overall clinico-pathological concordance rate was 61.11% with 77.77% concordance for leprosy cases.

Conclusion

Major cause of granulomatous diseases in developing countries is still infection. Clinicohistopathological constellation is important to pinpoint a diagnosis to mete out appropriate treatment.

Trichorrhexis nodosa is a hair shaft disorder presented with whitish nodes all over the hair (diffuse form) or localized to an area (localized form) and could be either congenital or acquired. We are reporting a case of acquired localized form of trichorrhexis nodosa due to trauma (physical–chemical).

Pyoderma gangrenosum is an inflammatory disease that has been found to be associated with many systemic illnesses. Here we describe, first time to our knowledge of pyoderma gangrenosum as well as pyostomatitis vegetans in a patient with hypogonadotropic hypogonadism. Later on inflammatory bowel disease was also detected. The pyoderma lesions appeared as multiple outbreaks which resolved totally after several combined immunosuppressive treatment. The clinical course of pyoderma gangrenosum and inflammatory bowel disease appeared independent, with no apparent overlap in inflammatory activity or response to the drugs administered.

Infantile hemangiomas are the most common benign childhood tumors, they are more common in girls and premature babies, and all races are affected with a slight preponderance in whites (Metry). These lesions most commonly occur on the head and neck area, but they can occur anywhere on the body (Paller, 2011). Here, we describe a case of bilateral facial mandibular segment hemangioma with deep and superficial components involving both parotid glands which was managed successfully with propranolol.

We present a new case of cutaneous collision tumor in which seborrheic keratosis coexist in the same lesion of congenital melanocytic nevus.

Alopecia areata (AA) is a nonscarring, autoimmune hair loss on the scalp, and/or body. Etiology and pathogenesis are still unknown. The most common site affected is the scalp in the form of solitary or multiple patches of alopecia. Histopathology is characterized by an increased number of telogen follicles and presence of inflammatory lymphocytic infiltrate in the peribulbar region. Corticosteroids are the most popular drugs for the treatment of this disease. This review precisely outlines the etiologic and pathogenic mechanisms, clinical features, diagnosis and management of alopecia areata.

A 31-year-old woman presented for evaluation of multiple verrucous, coalescent papules on the vulva. A histopathological examination revealed acanthotic epidermis and cystic proteinaceous fluid-filled spaces in the papillary dermis. The clinical and histological features were compatible with lymphangioma circumscriptum of the vulva which rarely occur in this location. We describe a new case of LC with vulvar involvement.

Pilomatricoma is a benign tumor of the hair matrix. It is most often seen in children and young adults as a slowly growing nodule in the skin of the head and neck. The frequency of presentation of this lesion in the upper extremities is relatively rare. Pilomatricoma is a frequently misdiagnosed entity in clinical practice. They are usually asymptomatic, solitary, firm or hard, freely mobile, dermal or subcutaneous nodules. Most tumors are smaller than 3 cm in diameter. We report a 32-year-old woman with a giant pilomatricoma of the arm. Surgical excision was curative without recurrence. In this paper, we discuss the clinical, histopathologic characteristics of pilomatricoma and review the literature regarding pilomatricomas in the upper extremity.