Tattoos: Very Popular, Not So Innocent.

Tattooing is a popular practice worldwide. Its origin dates back to the year 5000 BCE with a frozen mummy and travels across time through diverse cultures and places until it reaches the modern occidental world. Inks and materials used for tattooing are poorly controlled and carry potential risks of skin reactions.

Multiple cystic disease: K17 dysfunction?

Our patient is a 29-year-old woman without any previous disease who presented with different kinds of lesions on her face, neck, and chest. She first noticed the lesions 10 years ago and, since that time, they have become more numerous. She has no affected relatives.

Syndromic nevoid hypermelanosis: description of seven cases with a 10-year follow up.

Skin lesions can often be the only sign of an underlying systemic abnormality which will require further investigation. Several syndromic conditions are diagnosed after their cutaneous marker, which is in most cases a nevus. We report a neurocutaneous condition which we named "syndromic nevoid hypermelanosis" (SNH).

Actinomyces meyeri cutaneous actinomycosis.

Actinomyces meyeri cutaneous actinomycosis is a very rare disease. It often results from contiguous dissemination of an underlying focus. We report a case of pulmonary actinomicosis with secondary cutaneous involvement which led to the diagnosis.

Skin cancer induced by arsenic in the water.

Background: Arsenic (As) is a well-recognized poison. Exposure may be of an acute nature, leading to high concentrations and acute arsenic poisoning. Chronic exposure may lead to benign skin changes, skin cancer, and internal malignancy.