Six kinds of erythemato-squamous diseases have been common skin diseases, but the diagnosis of them has always been a problem. The quantitative data processing method is not suitable for erythemato-squamous data because they are categorical qualitative data. This paper proposed a new method based on group lasso penalized classification for the feature selection and classification for erythemato-squamous data with categorical qualitative data. The first categorical data of 33 dimensions were changed by the virtual code, and then 34th dimension age data were discretized and changed by the virtual code. Then the encoded data were grouped according to class group and variable group. Lastly Group Lasso penalized classification was executed. The classified accuracy of 10-fold cross validation was 98.88% ± 0.002 3%. Compared with those of other method in the literature, this new method is simpler, and better for effect and efficiency, and has stronger interpretability and stronger stability.
Algorithms ; Computational Biology ; methods ; Humans ; Reproducibility of Results ; Skin Diseases ; classification ; diagnosis

Systemic lupus erythematosus (SLE) is a prototype for multi-system, autoimmune diseases of unknown etiology, characterized by the production of autoantibodies. SLE can involve any organ system of the body with constitutional symptoms, including musculoskeletal, skin, renal, neuropsychiatric, cardiovascular, respiratory and gastrointestinal systems. These wide spectra of disease manifestations have made disease classification difficult. American College of Rheumatology (ACR) proposed classification criteria for SLE for research purpose in 1982, which had been widely used for research purpose and not for diagnosis. In 1997, these criteria were updated with further recognition of antiphospholipid antibodies, but not validated. But ACR criteria didn't still meet the necessity for earlier diagnosis of SLE. In order to improve clinical relevance and incorporate new knowledge to the field of lupus immunology, the Systemic Lupus Erythematosus International Collaborating Clinics (SLICC), an international lupus expert group dedicated to clinical research on lupus, revised the ACR systemic lupus classification criteria in 2012. The new 2012 SLICC criteria were validated using a large set of patient scenarios rated by experts. The history and diagnostic utility of SLE criteria are covered in this review.
Allergy and Immunology ; Antibodies, Antiphospholipid ; Autoantibodies ; Autoimmune Diseases ; Classification* ; Diagnosis ; Humans ; Lupus Erythematosus, Systemic* ; Rheumatology ; Skin

Urticaria is a common cutaneous disease characterized by recurrent and transient wheals and pruritus, sometimes accompanied angioedema. The classification of urticaria is based on the duration of the disease and whether extrinsic triggers are identified or not. Acute urticaria is usually occurred by specific causes, such as drug, food, and infection, etc. Therefore, acute urticaria can be remitted within 6 weeks just by avoiding the exposure to the causes. However, chronic urticaria defined as repeatedly occurred itchy wheals and/or angioedema for at least 6 weeks, has a significant effect on patients' quality of life. Chronic inducible urticaria can be triggered by various physical stimuli including dermographism, delayed pressure, cold, heat, cholinergic stimuli, sunlight, and exercise. Chronic spontaneous urticaria (CSU) is diagnosed when no specific extrinsic cause is identified in the patients. CSU due to autoimmune mechanism accounts for 30–50%, autologous serum skin test and anti-thyroid autoantibody can be evaluated. However, various physical stimuli, emotional or physical stress, drugs, particularly aspirin and non-steroidal anti-inflammatory drugs can exacerbate urticaria in 30–75% of patients with CSU. Allergic diseases and autoimmune diseases are more common in CSU patients than in general populations. To assess the severity of urticaria and to adjust treatment step, urticaria activity score over 7 days, calculated by the number of wheals and the severity of pruritus, is recommended by recent international guidelines.
Angioedema ; Aspirin ; Autoimmune Diseases ; Classification ; Diagnosis ; Hot Temperature ; Humans ; Pruritus ; Quality of Life ; Skin Tests ; Sunlight ; Urticaria

The purpose of this study is to develop new standards for the disability evaluation with reference to existing laws and other study reports regarding disabilities for the rational evaluation of the diverse kinds of disfigurement in appearance and skin. Three plastic surgery specialists and 3 dermatology specialists developed a new standard for the disability evaluation which is appropriate for circumstances in Korea. Disability rate does not take into account the social occupation, gender or age of the patient, but instead, evaluate the Activity of Daily Living and the social adaptability of the appearance and skin disfigurement regardless of the balance between different disabilities. We tried to include most cutaneous disorders and categorized them into 3 types; congenital (Type 1), acquired (Type 2) as well as any permanent skin impairment sequelae of disease, trauma or treatment process (Type 3). For type 3 disorders, we tried to rate the score according to the size of involved skin lesion. The disability rate is determined by dividing the disability class into 8 steps based on the seriousness of each type of disability.
Activities of Daily Living/classification ; Cicatrix/diagnosis ; *Disability Evaluation ; Face/abnormalities ; Humans ; Korea ; Program Development ; Skin Diseases/classification/*diagnosis ; Skin Physiological Phenomena

A Case of prurigo nodularis in 47-year-old female was presented with brief review of literatures. This is one of relatively rare dermatoses and still has many disputes in etiology and classification. Multiple erythematous brownish hyperkeratotic lichenified nodules were scattered on the back and extremities associated with intolerable itching trouble. Histopathologically, severe hyperkeratosis with focal neutrophile infiltration and pseudoapitheliomatous hyperplasia of acanthotic lesion in the epidermis is presented. Diagnosis was confirmed by characteristic clinical pictures and histopathological features. Treatment with corticosteroids, sediatives and tranquilizers revealed of favorable results.
Adrenal Cortex Hormones ; Classification ; Diagnosis ; Dissent and Disputes ; Epidermis ; Extremities ; Female ; Humans ; Hyperplasia ; Middle Aged ; Neutrophils ; Prurigo* ; Pruritus ; Skin Diseases

Systemic sclerosis (SSc) is a connective tissue disease of unknown origin, which is characterized by fibrosis of the skin and internal organs, and endothelial and immunologic dysfunction. The presence of a wide range of symptoms renders disease classification difficult. Although recent studies have contributed to our understanding of this debilitating illness, well-validated classification criteria are required for accurate comparison between registries and clinical trials, to assess response to treatment, morbidity and prognosis. Given the emphasis placed upon early and aggressive treatment, the 1980 American College of Rheumatology (ACR) classification criteria are of limited utility with respect to early diagnosis of SSc and limited cutaneous SSc. Recently, the 2013 ACR/European League Against Rheumatism classification criteria for SSc were published for research and clinical practice purposes. These criteria include skin thickening, fingertip lesions, telangiectasia, abnormal nailfold capillaries, Raynaud's phenomenon, SSc-specific autoantibodies and pulmonary complications pertaining to vasculopathy, autoimmunity and fibrosis. These updated criteria should allow a greater number of patients to receive an early diagnosis of SSc.
Autoantibodies ; Autoimmunity ; Capillaries ; Classification* ; Connective Tissue Diseases ; Diagnosis ; Early Diagnosis* ; Fibrosis ; Humans ; Prognosis ; Registries ; Rheumatic Diseases ; Rheumatology ; Scleroderma, Systemic* ; Skin ; Telangiectasis

Ichthyosis hystrix is a localized variant of Bullous Congenital Ichthyosiform Erythroderma by Broq, and also, localized form of Epidermolytic hyperkeratosis according to Frost and Van Scott's classification of ichthyosi-form dermatoses. Clinically it is generally considered to be widespread systematized epidermal nevus, and demonstrating an autosomal dominant pattem of inheritance, and characterized by verrucous scale at or shortly after birth with particular involve- ment of flexural areas. A case of 21 year old girl with ichthyosis hystrix was reported, The skin lesion showed multiple rice to pea sized linear verrucous papules on left forearm, neck, axilla and upper chest. The skin biopsy was done, the finding shows remarked laminated hyperkeratosis, acanthosis, papillomatosis, and vacuoliization on malpighian layer. Diagnosis was confirmed by clinicaI apperance and histopathologicaI finding. The method of treatment is 0. 05% Vitamin A acid ointment application and show marked improvement.
Axilla ; Biopsy ; Classification ; Diagnosis ; Female ; Forearm ; Humans ; Hyperkeratosis, Epidermolytic ; Ichthyosis* ; Neck ; Nevus ; Papilloma ; Parturition ; Peas ; Porcupines* ; Skin ; Skin Diseases ; Thorax ; Tretinoin* ; Vitamin A* ; Vitamins* ; Wills ; Young Adult

PURPOSE: Atopic Dermatitis (AD) is a chronically relapsing inflammatory skin disease. Generally, aeroallergens and food allergens can exacerbate symptoms in AD. Currently they are divided into two groups: one is an IgE mediated form and the other is a non-IgE mediated form. This study focused upon clinical manifestations of two distinct forms of AD. METHODS: We evaluated 110 patients (male: 58, female: 52) with AD. All patients had visited Masan Samsung Hospital from June 2002 to February 2005. The patients were divided into 2 sub-groups according to their serum total IgE and specific IgE levels. The serum total IgE and specific IgE to Dermatophagoides pteronyssinus, Dermatophagoides farinae, Egg white, Cow's milk and Soybean were measured by the Pharmacia CAP-FEIA system. Metacholine provocation tests were conducted to reveal bronchial hyper-responsiveness and ARIA guidelines for diagnosis of AR were applied. RESULTS: Our study showed more female predominance in non IgE-mediated atopic dermatitis patients and showed higher total eosinophil count in IgE-mediated atopic dermatitis. (P< 0.05) There was no difference in frequency of asthma between two groups (P> 0.05), but allergic rhinitis was significantly predominant in non IgE-mediated atopic dermatitis patients. (P< 0.05) CONCLUSION: Female was more predominant in non IgE-mediated atopic dermatitis patients and IgE-mediated atopic dermatitis patients showed higher total eosinophil count and more frequency of allergic rhinitis.
Allergens ; Asthma ; Child* ; Classification* ; Dermatitis, Atopic* ; Dermatophagoides farinae ; Dermatophagoides pteronyssinus ; Diagnosis ; Egg White ; Eosinophils ; Female ; Humans ; Hypersensitivity, Immediate ; Immunoglobulin E* ; Milk ; Rhinitis ; Skin Diseases ; Soybeans

The survey on branchial anomalies was conducted by Korean Association of Pediatric Surgeons. A total of 173 cases were reported, which were managed by 36 members and cooperators during the three years from January 1, 1993 through December 31, 1995. The following results were obtained by retrospective analysis of the 173 cases of branchial anomalies. The presenting symptoms were cervical mass in 101 cases, pit with or without discharge in 71, cervical abscess in 47 and respiratory difficulty in 3. The average age of the patients with cervical abscess was 52 months. Seventy(79%) of 89 patients with branchial anomalies and a cystic mass had their first clinical manifestations by 1 year of age, while 40(51%) of 78 patients with only a branchial cyst had their first clinical manifestation in first year of life. Radiologic studies were carried out in 77 patients(43%). The preferred diagnostic modalities were ultrasonography(47 patients), simple neck radiogram(l9) and CT scan(17). Preoperative diagnosis was correctly made in 156(91%) of 173 patients. Seventeen patients were incorrectly diagnosed as thyroglossal duct cyst in 5 patients, cystic hygroma in 4, dermoid cyst in 3, and lymphadenopathy in 3. There were no remarkable difference in sex and laterality of presentation but bilateral lesions were found in 9(5%) patients and unusual locations of the anomalies were the manubrium, left subclavicular area, median cervial area, preauricular and parotid area. There were 78(45%) patients with cyst, 52(30%) patients with sinus, 35(20%) patients with fistula and 8(5%) patient with skin tag. Embryological classification was possible in only 64(37%) patients. The 2nd branchial anomaly was present in 50 (78%), the 1st branchial anomaly in 10(18%), and the 3rd or 4th branchial anomaly in 4(6%). Histopathological study of the lining epithelium(N=134) is recorded that 45% were lined with squamous epithelium, 17% with respiratory epithelium, 6% with. squamous and respiratory epithelium, 14% with inflammatory change. Lymphoid tissue was common(62%) in the wall of the lesions. Twelve(7%) of 158 patients had postoperative complications including wound complication, recurrence and facial nerve palsy.
Abscess ; Branchioma ; Child ; Classification ; Dermoid Cyst ; Diagnosis ; Epithelium ; Facial Nerve ; Fistula ; Humans ; Korea ; Lymphangioma, Cystic ; Lymphatic Diseases ; Lymphoid Tissue ; Manubrium ; Neck ; Paralysis ; Postoperative Complications ; Recurrence ; Respiratory Mucosa ; Retrospective Studies ; Skin ; Surgeons ; Thyroglossal Cyst ; Wounds and Injuries