A 37-year-old male with localized trichorrhexis nodosa on the scalp is described. Two circumscribed broken hair patches that had occurred as a consequence of repetitive friction trauma were seen on both retroauricular areas of scalp. Scanning electron microscopic findings revealed typical trichorrhexis nodosa.
Adult ; Friction ; Hair ; Humans ; Male ; Scalp

Portable gamma radiography for nondestructive testing with 192Ir is commonly used in various industrial fields to defect possible internal defects of metals in pipelines, tanks, bridges, ships and so forth in Korea. Compared to the numerous researches about biologic effects and potential risks of radiation, only a Jew papers were reported about radiodermatitis from occupational exposure to 192Ir. In this study, we investigated six patients with occupational radiodermatitis with developed during portable gamma radiography for nondestructive testing with 192Ir. All six patients had developed radiodermatitis on their hands and fingers. They noticed painful swelling, erythema, and bullae on their fingers or palms 1 to 2weeks after exposure. Three patients suffered from chronic fibrosis and recurrent ulcerations. We also discussed about the working situation of our patients and reviewed the literatures about the radiodermatitis from occupational exposure to 192Ir. In conclusion, we think ionizing radiation, though it is a useful tool in industry, must be carried out in accordance with radiation protection rules and regulations.
Erythema ; Fibrosis ; Fingers ; Hand ; Humans ; Jews ; Korea ; Metals ; Occupational Exposure* ; Radiation Protection ; Radiation, Ionizing ; Radiodermatitis* ; Radiography ; Ships ; Social Control, Formal ; Ulcer

BACKGROUND: Long-term oral itraconazole and terbinafine are widely used in the treatment of onychomycosis. Accelerated nail growth in patients with itraconazole has been described in several reports. However, there has been no report regarding the effect of antifungal agents on cultured nail matrix cells(NMCs). OBJECTIVE: We applied several antifungal agents on cultured human NMCs and epidermal kera- tinocytes(EKs) to compare the cytotoxicity of several antifungal agents and also to verify possible stimulating effects of itraconazole and 6-hydroxyitraconazole on nail growth. METHODS: To evaluate the effect of antifungal agents, the 3-(4,5-dimethylthiazo1-2-yl) 2,5-diphenyl- tetrazolium bromide(MTT) test, tritiated thymidine incorporation test, and lactic dehydrogenase(LDH) leakage test were used. RESULTS: Dose dependent decreases in cell viability and DNA synthesis, and dose dependent increases in LDH liberation were observed in cultured human NMCs and EKs after exposure to several antifungal agents. The dose-response reaction patterns for NMCs and EKs to antifungal agents were similar. The cytotoxicity potency of several antifungal agents measured by each method were slightly different. Itraconazole and 6-hydroxyitraconazole did not show stimulating effects on cell proliferation in in vitro monolayer cell culture systems. CONCLUSION: These observations suggest that itraconazole appeared less cytotoxic but showed no stimulating effects on nail matrix cell proliferation in vitro. Cultured human EKs as well as NMCs may be useful in evaluating the effects of agents which are involved in nails.
Antifungal Agents* ; Cell Culture Techniques ; Cell Proliferation ; Cell Survival ; DNA ; Humans* ; Itraconazole ; Keratinocytes* ; Onychomycosis ; Thymidine

BACKGROUND: In vitro epidermal keratinocytes(EKs) culture systems are widely used in studying skin biology and differentiation. Recently a monolayer culture method of nail matrix cells(NMCs) has been developed. OBJECTIVE: This study was designed to establish a method of culture of NMCs and compared its characteristics with those of EKs. METHODS: Human NMCs were isolated and cultured in a defined medium. Phase contrast microscopic examination, growth rate and ketatin expression were evaluated. RESULTS: In in vitro monolayer culture, NMCs had a similar growth pattern and morphological features as EKs. The synthesis of hard keratins was detected. CONCLUSION: These observations suggest that the NMCs culture model may be useful for the study of nail properties and the effects of drugs.
Biology ; Humans ; In Vitro Techniques ; Methods ; Skin

BACKGROUND: Although drug eruption refers to a common dermatologieal condition, there are numerous setbacks in the diagnosis. In addition there are no annual average prevalence rates of drug eruptions according to time sequence in Korea. OBJECTIVE: This study attempts to detme the clinical features and causative drugs of drug eruptions, the diagnostic value of various skin tests and to evaluate the dome,stic annual average prevalence rate of drug eruptions according to time sequence. METHOD: 270 patients with drug eruptions were reviewed clinically. In 103 patients, intradennal, patch and scratch-patch tests were performed using suspected drugs. The annual average prevalence rate of drug eruptions was calculated from 10 different general hositals in Korea. RESULT: Exanthematous eruptions(49.3), fixed drug eruptions(30.1), and urticaria(10.0%) were the common types of drug eruptions. The common causative agents were antibiotics/antimicrobials, antipyretics(NSAIDs, and CNS depressants. 52 patients out of 103 had positive results after at least one skin test with suspected drugs. CONCLUSION: In our study, we were ahle to obtain somewhat meaningful results basnl on data from the combination of various skin tests. As a result, physicians need to prescrible drugs with care.
Central Nervous System Depressants ; Diagnosis ; Drug Eruptions* ; Humans ; Korea ; Prevalence ; Skin Tests* ; Skin*

BACKGROUND: Topical vitamine D analogues have been reported to bean effective treatment in patients with psoriasis. Calcipotriol, a new vitamin D analogue, is effect ve and at least 100 times less calcemic than calcitriol. OBJECTIVE: Our purpose was to study the clinical efficacy, safety and tolerability of calcipotriol ointment in the treatment of psoriasis. METHODS: Twenty five patients with chronic poriasis were treated with calcipotriol ointment(50pg/g) twice daily. Efficacy as meaaured by the clinical degree of erythcimor, scale and thickness of the lesions, and safety were assessecl every 2 weeks. RESULTS: The total score of erythema, scale and thickness of the lesions decreased in 6 weeks from 8.52+0.76 to 3.80+1.7 with calcipotriol. Some patients developed mild and transient local side effects. The laboratory tests including serum calcium remained unchanged. CONCLUSION: Topical applicalion of calcipotriol ointment for 6 week was found to bean effective and safe treatment of psoriasis vulgaris.
Calcitriol ; Calcium ; Erythema ; Humans ; Psoriasis* ; Vitamin D ; Vitamins

BACKGROUND: Topical vitamine D analogues have been reported to bean effective treatment in patients with psoriasis. Calcipotriol, a new vitamin D analogue, is effect ve and at least 100 times less calcemic than calcitriol. OBJECTIVE: Our purpose was to study the clinical efficacy, safety and tolerability of calcipotriol ointment in the treatment of psoriasis. METHODS: Twenty five patients with chronic poriasis were treated with calcipotriol ointment(50pg/g) twice daily. Efficacy as meaaured by the clinical degree of erythcimor, scale and thickness of the lesions, and safety were assessecl every 2 weeks. RESULTS: The total score of erythema, scale and thickness of the lesions decreased in 6 weeks from 8.52+0.76 to 3.80+1.7 with calcipotriol. Some patients developed mild and transient local side effects. The laboratory tests including serum calcium remained unchanged. CONCLUSION: Topical applicalion of calcipotriol ointment for 6 week was found to bean effective and safe treatment of psoriasis vulgaris.
Calcitriol ; Calcium ; Erythema ; Humans ; Psoriasis* ; Vitamin D ; Vitamins

BACKGROUND: The 5α-reductase inhibitor finasteride blocks the conversion of testosterone to dihydrotestosterone(DHT), the androgen responsible for androgen- etic alopecia in genetically predisposed men. OBJECTIVE: The purpose of this study was to determine the efficacy of finaster- ide treatment according to the type of androgenetic alopecia in Korea. METHODS: 196 patients with finasteride(1.25mg/day) were registered in this study and 68 patients were followed over 8 months. Efficacy was evaluated by globa1 photographs, investigator assessment of clinical change,and patients' self assessment via self administered hair growth questionnaire. RESULTS: Patients' self-assessment demonstrated that finasteride treatment slowed hair loss, increased hair growth, and improved appearance of hair. These improvements were corroborated by objective assessments after 4 months of treatment. Adverse effects such as sexual dysfunction were minimal. CONCLUSION: Oral finasteride 1.25mg/day slowed the progression of hair loss and increased hair growth in clinical tria1s of men with androgenetic alopecia over 8 months. With its generally good tolerability profile, finasteride is a new approach to the management of this condition, for which treatment options are few.
Alopecia* ; Finasteride* ; Hair ; Humans ; Korea ; Male ; Research Personnel ; Self-Assessment ; Testosterone

Sebaceous carcinoma is an uncommon neoplasm usually associated with ocular adnexa. This malignancy may occur at any anatomic site that contains sebaceous glands. Despite the widespread anatomic distribution of sebaceous glands, extraocular sebaceous carcinoma occurs with far less frequency. We report a case of an 87-year-old Korean woman with extraocular sebaceous carcinoma treated with total excision.
Aged, 80 and over ; Female ; Humans ; Sebaceous Glands

BACKGROUND: Androgenetic alopecia is a common problem, affecting approximately 50 percent of men and perhaps many women, over the age of 40 in Caucasians. There have been several reports about the prevalence and types of androgenet clopecia in the general population of Caucasians however the prevalence and types of and renetic alopecia has not been reported in the general population of Korea. OBJECTIVE: Our purpose was to ascertain the prevalence ar d ypes of androgenetic alopecia in Koreans and to compare it with that of the Caueasian. METHODS: A survey on the prevalence and clinical types of aidrogenetic alopecia was conducted by one dermatologet from July to September, 1993. The total number of subjects was 1224 males and 1094 females. RESULTS: The following esults were obtained from this sudy l. In men, the prevalence rate of androgenetic alopecia increased steadily with advancing age and the prevalence rate of more advanced degrees of alepcia(types V, VI and VII) remained relatively low until the seventh decade of life. The preralence rates until the age of sixties in Korean men were lower than that of the white and is pattern became closer with that of the white after the seventies. 2. In Korean women, the prevalence rate of androgenetic was lower than that of the white until fifties and it increased markedly after sixties. CONCLUSION: The prevalence rate of androgenetic alopecia in Korean was lower than that of the Caucasian. Our data adicates that Korean men have a late onset of baldness and more preservation of the frontal hair line with decreased frequencyte frontoparitetal loss than the Caucasian.
Alopecia* ; Female ; Hair ; Humans ; Korea ; Male ; Prevalence*