Publications by authors named "Arun Achar"

Psoriasis, being a chronic, inflammatory, lifelong skin disorder, has become a major threat to the human population. The precise and effective diagnosis of psoriasis continues to be difficult for clinicians due to its varied nature. In northern India, the prevalence of psoriasis among adult population ranges from 0.

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Semiconductor quantum dots are overwhelmingly used for in situ monitoring and imaging of cell-scaffold interactions. However, quantum dots suffer from oxidative biodegradation in biological systems, besides being toxic due to the presence of heavy metals. In this study, we report the development of an intrinsically fluorescent nanofibrous scaffold of polycaprolactone-gelatin for skin tissue regeneration and noninvasive monitoring of scaffold activity in vivo.

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Chronic wound is an abnormal disease condition of localized injury to the skin and its underlying tissues having physiological impaired healing response. Assessment and management of such wound is a significant burden on the healthcare system. Currently, precise wound bed estimation depends on the clinical judgment and remains a difficult task.

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Chronic lower extremity wound is a complicated disease condition of localized injury to skin and its tissues which have plagued many elders worldwide. The ulcer assessment and management is expensive and is burden on health establishment. Currently accurate wound evaluation remains a tedious task as it rely on visual inspection.

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The aim of this paper was to develop a computer assisted tissue classification (granulation, necrotic, and slough) scheme for chronic wound (CW) evaluation using medical image processing and statistical machine learning techniques. The red-green-blue (RGB) wound images grabbed by normal digital camera were first transformed into HSI (hue, saturation, and intensity) color space and subsequently the "S" component of HSI color channels was selected as it provided higher contrast. Wound areas from 6 different types of CW were segmented from whole images using fuzzy divergence based thresholding by minimizing edge ambiguity.

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An accessory penis is a very rare anomaly. Only five cases have been reported thus far to our knowledge. We present the case of a child aged 2 years and 10 months who had a penis-like structure (containing phallus and glans) attached to the right buttock.

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The most common complication of herpes zoster in immunocompetent patients is postherpetic neuralgia, which is very difficult to treat. Significant beneficial effects have been found for amitriptyline, gabapentin, pregabalin, carbamazepine, sodium valproate, oxycodone, corticosteroid, topical capsaicin, tramadol, etc. The aim of this open randomized comparative study was to demonstrate clinical efficacy of amitriptyline and pregabalin.

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Background: Anthrax is a life-threatening infectious disease that normally affects animals, especially ruminants. It is caused by the bacteria Bacillus anthracis. The most common mode of infection is through the skin, which causes a painless sore that usually heals without treatment.

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Echinococcus granulosus causes a zoonotic infection called Cystic Echinococcosis (CE). Surgeons meet with hydatid cysts of the liver and lungs with reasonable frequency. However hydatid cyst may also appear in other parts of the body.

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Background: Melasma is an acquired increased pigmentation of the skin, characterized by gray-brown symmetrical patches, mostly in the sun-exposed areas of the skin. The pathogenesis is unknown, but genetic or hormonal influences with UV radiation are important.

Aims: Our present research aims to study the clinico-epidemiological pattern and the precipitating or provocation factors in melasma.

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Xanthogranuloma is a benign, asymptomatic, and self-healing disorder of non-Langerhans cell histiocytosis, affecting mostly infants, children, and rarely adults. Diagnosis is easy in typical cases but become more complex in unusual forms. We report a case of a 28-year-old male patient who presented with multiple diffuse brown-to-yellowish papulonodular eruptions over extremities, ears, face, trunk, and extensors of joints with almost bilaterally symmetrical distribution for a period of one month.

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Metabolic disorders are often encountered in clinical practice. Some of these diseases are associated with dermatological and musculoskeletal manifestations. Familial hypercholesterolemia is a disorder of lipoprotein metabolism characterized by elevated cholesterol, low-density lipoprotein cholesterol, xanthomas and early onset atherosclerosis.

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Epidermolytic hyperkeratosis is a rare autosomal dominant genodermatosis that presents at birth as generalised erythema, blisters and erosions. In subsequent periods, erythema and blistering improves but patients go on to develop hyperkeratosis scalingthat is especially prominent along joint flexures, neck, hands and feet. The disease is caused by mutations in either keratin 1 or 10.

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Tuberous sclerosis is a rare neuro-cutaneous syndrome with autosomal dominant penetrance. Only some organs are involved, e.g.

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