Ribociclib-induced extensive vitiligo-like lesions: possible pathomechanisms with clinical, dermoscopic and histological correlation.

Cyclin dependent kinase (CDK) 4/6 inhibitors are targeted agents which act on cyclin-D and these combined with hormonal therapy have been approved for the treatment of locally advanced or metastatic breast cancer. CDK 4/6 inhibitors have been found to have a tolerable adverse event profile; however, they have been associated with various dermatological adverse events. We report a case of ribociclib-induced vitiligo and discuss the clinical, dermoscopic and histological features with a review of the various possible pathomechanisms involved.

Generalized granuloma annulare resolution following biopsy: a remote reverse Koebner phenomenon.

This generalized granuloma annulare case of palisading type, with extensive lesions of 10 months duration resolving 1 week post biopsy without any treatment is the most exceptional depiction of this poorly understood remote reverse Koebner phenomenon.

Epidemiology of Nontuberculous Mycobacterial Infection in Tuberculosis Suspects.

Nontuberculosis mycobacteria (NTM) are opportunistic pathogens that cause a wide range of illnesses. Here, the species distribution and prevalence of NTM infections in tuberculosis suspects was analyzed. A total of 7,073 specimens from pulmonary and extrapulmonary sites were analyzed, and 709 (10%) were found to be culture positive for mycobacteria. Of these, 85.2% were identified as Mycobacterium tuberculosis complex and 14.8% as NTM (65.7% rapid growers and 34.3% slow growers). Speciation of the NTM isolates (n = 69) identified 19 NTM species. M. abscessus (33.3%) and M. fortuitum (24.6%) were the most dominant NTM species isolated from the patients, followed by M. porcinum (5.8%) and M. parascrofulaceum (4.3%). We also report peritonitis caused by rapidly growing NTM among the patients undergoing continuous ambulatory peritoneal dialysis and a case of M. senegalense peritonitis. A low prevalence but high species diversity of NTM was detected in our study. The high species diversity of NTM necessitates the need to unequivocally identify mycobacterial isolates for appropriate treatment.

Clinical Profile of Androgenic Alopecia and Its Association with Cardiovascular Risk Factors.

CONTEXT: Androgenic alopecia (AGA) is a hereditary androgen-dependent disorder, characterized by gradual conversion of terminal hair into miniaturized hair and defined by various patterns. Common age group affected is between 30 and 50 years. Metabolic syndrome (MetS) is a cluster of cardiovascular risk factors that include diabetes and prediabetes, abdominal obesity, dyslipidemia, and hypertension. The relationship between androgenic alopecia and MetS is still poorly understood. AIM: The aim was to study the clinical profile of androgenic alopecia and its association with cardiovascular risk factors. MATERIALS AND METHODS: This was a hospital-based cross-sectional study done on men in the age group of 25-40 years. Fifty clinically diagnosed cases with early-onset androgenic alopecia of Norwood Grade III or above and fifty controls without androgenic alopecia were included in the study. Data collected included anthropometric measurements, blood pressure, family history of androgenic alopecia, history of alcohol, smoking; fasting blood sugar, and lipid profile were done. MetS was diagnosed as per the new International Diabetes Federation criteria. Chi-square and Student's t-test were used for statistical analysis. RESULTS: MetS was seen in 5 (10%) cases and 1 (2%) control (P=0.092). Abdominal obesity, hypertension, and lowered high-density lipoprotein were significantly higher in patients with androgenic alopecia when compared to that of the controls. CONCLUSION: A higher prevalence of cardiovascular risk factors was seen in men with early-onset androgenic alopecia. Early screening for MetS and its components may be beneficial in patients with early-onset androgenic alopecia.

In vivo anti-psoriatic activity, biodistribution, sub-acute and sub-chronic toxicity studies of orally administered methotrexate loaded chitin nanogel in comparison with methotrexate tablet.

The anti-psoriatic efficacy of orally administered methotrexate loaded chitin nanogel (MCNG) was evaluated (two doses- 2.715 mg/kg and 5.143 mg/kg) and compared against orally administered methotrexate tablet MTX (5.143 mg/kg). MCNG at both dose levels of 2.715 mg/kg and 5.143 mg/kg exhibited significant anti-psoriatic activity which is very much comparable with MTX, caused normalization of histological features and inflammatory score associated with induced psoriasis. Biodistribution studies revealed the presence of drug in serum and in vital organs at all the three cases with highest amount in MCNG at 5.143 mg/kg dose, followed by MTX tablet and are lowest in MCNG at 2.715 mg/kg dose. MCNG at the highest dose of 5.143 mg/kg caused liver, lung and kidney toxicities on sub acute toxicity studies and MTX tablet was found to be toxic on liver and lung on sub chronic toxicity studies. MCNG 2.715 mg/kg was found to be safe on both sub acute and sub chronic administrations, suggesting that it can provide sufficient serum and tissue level of methotrexate necessary to clear psoriatic lesions, without inducing systemic toxicity and expected to be a better alternative for orally administered conventional methotrexate tablet for patients who need systemic medications for psoriasis.

Mycobacterium chelonae infection complicating traumatic and surgical wounds: A case series.

Mycobacterium chelonae is a rapidly growing non-tuberculous mycobacterium. The skin and soft tissue infections due to this organism are steadily on the rise and need to be delineated specifically as most of these are not responsive to routine antituberculosis treatment. Here, we report 3 different presentations caused by Mycobacterium chelonae in traumatic and surgical wounds. Mycobacterium chelonae can complicate surgical or traumatic wounds.This infection may also present as injection site abscesses. Diabetics on insulin injections are especially at risk. A high index of suspicion is necessary in long standing culture negative lesions for clinching the diagnosis. PCR can be helpful in confirming the diagnosis.

Study of clinical profile of herpes zoster in human immunodeficiency virus positive and negative patients at a rural-based tertiary care center, Gujarat.

BACKGROUND: Herpes zoster usually presents with typically grouped vesicles on erythematous base involving single dermatome with self-limiting nature in immunocompetent individuals while it may present in extensive form involving multiple dermatomes involvement or disseminated form in immunocompromised, especially in human immunodeficiency virus (HIV). AIMS AND OBJECTIVES: The aim of this study was to study the prevalence of HIV in patients of herpes zoster, to compare the clinical presentation of herpes zoster in HIV-infected and noninfected patient. MATERIALS AND METHODS: The study was carried out in the Department of Dermatology in a Teaching Institute of Gujarat, from June 2008 to May 2014 after ethical clearance. The study population included all the patients with a clinical diagnosis of herpes zoster. All the patients were investigated for HIV infection after written consent. RESULTS: Out of total 688 patients of herpes zoster, 35 (5.1%) were HIV-positive, 26 (74.3%) were males and 9 (25.7%) were females. Among HIV-positive patients, 29 (82.85%) patients had localized dermatomal involvement, 4 (11.42%) patients had multiple dermatomal involvement, and only 2 (5.71%) had disseminated zoster while among HIV-negative, 636 (97.40%) had localized dermatomal involvement, 14 (2.14%) patients had multiple dermatomal involvement, and 3 (0.45%) had disseminated zoster. Cervical dermatome was most commonly involved dermatome in patients of HIV. CONCLUSION: Disseminated and multiple dermatomal involvement was more commonly involved among HIV-positive patients when compared to HIV-negative patients.