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Background and Objectives: Acanthosis nigricans is characterized by hyperpigmentation and velvet-like thickening of the skin. It symmetrically involves the neck, axilla, groins, antecubital and popliteal fossae, umbilical, and perianal areas. Acanthosis nigricans is a marker for insulin resistance and is increasingly found to be associated with metabolic syndrome. We conducted this study to estimate the frequency of metabolic syndrome in acanthosis nigricans. Methods: In this hospital-based, cross-sectional study, we evaluated 60 patients with acanthosis nigricans with neck involvement. They were examined for other areas of involvement by acanthosis nigricans. Axillary and neck severity was graded based on the scale described by Burke et al. Insulin resistance was interpreted using homeostatic model assessment (HOMA-IR). Metabolic syndrome was diagnosed according to the SAM-NCEP criteria. Collected data were analyzed using IBM SPSS Statistics, Version 22 (Armonk, NY: IBM Corp). Results: Axilla was the most common site involved in 51 patients (85%) followed by knuckles (55%). Metabolic syndrome was found in 78.3% of our patients, and 56.66% had insulin resistance. A statistically significant association of severity grading of axillary acanthosis nigricans with both metabolic syndrome (P = 0.001) and insulin resistance (P = 0.03) was noted. However, no meaningful association was found between the severity grading of neck acanthosis nigricans with both metabolic syndrome (P = 0.4) and insulin resistance (P = 0.08). The association of neck texture grading of acanthosis nigricans with insulin resistance was statistically significant (P = 0.005). Conclusions: Metabolic syndrome was seen in 78.3% of acanthosis nigricans. Axillary severity grading was associated with metabolic syndrome.

Bowen's disease is generally regarded as premalignant dermatoses. The disease affects both skin and the mucosa and has the potential to progress to invasive squamous cell carcinoma. There are descriptions of several histological variants of Bowen's disease like psoriasiform, atrophic, pagetoid, etc. Acantholysis of anaplastic keratinocytes with bullae/cleft formation is described in premalignant condition like actinic keratosis and adenoid variant of squamous cell carcinoma, but there is lack of report describing this phenomena in Bowen's disease. We present a case of unusual acantholytic variant of Bowen's disease with focus of micro-invasive carcinoma.

Sir, Head lice infestation, or pediculosis capitis, is a common health concern, especially in children. Physical examination revealed the presence of excoriated lesions at the occipital and cervical regions along with numerous yellow to brown nits, fixed to hair shaft. Dermoscopic examination using non-contact polarized light dermoscope (Dermlite; 3Gen, USA) along with Nikon D3200 digital camera, revealed the presence of multiple yellow to brown, ovoid eggs firmly attached to the hair shaft, corresponding to nits with vital nymph, along with brown translucent flat empty nits (Fig. 1 [See PDF]).

Here, we report a case of lip pigmentation in a chronic smoker, which cleared after single session of 1064 nm Q-switched neodymium-doped yttrium aluminium garnet (NdYAG) laser treatment. [5] A Q-switching technique emits nanosecond laser pulses by sudden releasing of the excited-state energy from a laser medium. Cho SB, Lee JH, Seo W, Bang D. Use of 532-nm Q-switched Nd:YAG laser for smoker's gingival hyperpigmentation.

The aim of these guidelines is to encourage dermatologists to use bath psoralen plus ultraviolet A (PUVA), bathing suit PUVA and soak PUVA in the treatment of psoriasis vulgaris and other conditions. Evidence was collected using searches of the PubMed, MEDLINE and COCHRANE databases using the keywords \"bath PUVA,\" \"soak PUVA,\" \"bathing suit PUVA\" and \"turban PUVA.\" Only publications in English were reviewed. One hundred and thirty-eight studies were evaluated, 57 of which fulfilled the criteria for inclusion. Both bath PUVA and bathing suit PUVA are very effective and safe treatments for generalized stable plaque psoriasis (strength of recommendation, A). Soak PUVA is very effective in the treatment of both palmoplantar psoriasis and chronic palmoplantar eczema (strength of recommendation, A).

Alopecia areata (AA) over scalp is known to present in various shapes and extents of hair loss. Typically it presents as circumscribed patches of alopecia with underlying skin remaining normal. We describe a rare variant of AA presenting in linear band-like form. Only four cases of linear alopecia have been reported in medical literature till today, all four being diagnosed as lupus erythematosus profundus.

Bowens disease is generally regarded as premalignant dermatoses. The disease affects both skin and the mucosa and has the potential to progress to invasive squamous cell carcinoma. There are descriptions of several histological variants of Bowens disease like psoriasiform, atrophic, pagetoid, etc. Acantholysis of anaplastic keratinocytes with bullae/cleft formation is described in premalignant condition like actinic keratosis and adenoid variant of squamous cell carcinoma, but there is lack of report describing this phenomena in Bowens disease. We present a case of unusual acantholytic variant of Bowens disease with focus of micro-invasive carcinoma.

Bowen′s disease is generally regarded as premalignant dermatoses. The disease affects both skin and the mucosa and has the potential to progress to invasive squamous cell carcinoma. There are descriptions of several histological variants of Bowen′s disease like psoriasiform, atrophic, pagetoid, etc. Acantholysis of anaplastic keratinocytes with bullae/cleft formation is described in premalignant condition like actinic keratosis and adenoid variant of squamous cell carcinoma, but there is lack of report describing this phenomena in Bowen′s disease. We present a case of unusual acantholytic variant of Bowen′s disease with focus of micro-invasive carcinoma.

Congenital self-healing reticulohistiocytosis (CSHRH) is a benign type of Langerhans cell histiocytosis (LCH) also known as Hashimoto-Pritzker disease. Clinically it presents with skin lesions at birth or in neonatal period, usually without any systemic involvement. Lesions often heal spontaneously in period of weeks to months. We report a case of CSHRH presenting with skin lesions at birth, describing need to make an early diagnosis and to have a multidisciplinary approach with regular follow-up, in managing this rare type of LCH.