Striae atrophicans are a type of stretch mark as a result of thinned skin. It usually follows medical conditions like Cushing's syndrome, steroid treatment, prolonged use of contraceptive pills, chemotherapeutic agents, antibiotics, Marfan syndrome, chronic liver diseases, anorexia nervosa, etc. It is more common in women than in men.
Acanthosis Nigricans
This article discusses the causes and management of dirty non-cleanable darkness over the neck and underarms, known as acanthosis nigricans.
