What Is Systemic Lupus Erythematosus? Skin Rash, Symptoms & Treatment Options Systemic lupus erythematosus (SLE) is a chronic autoimmune disease in which abnormal immune activity can inflame the skin, joints, kidneys, blood, heart, lungs, nervous system and other tissues.

What Is Sycosis Barbae? Beard-Area Folliculitis, Causes & Treatment Options Sycosis barbae is a deep, persistent form of beard-area folliculitis in which infection and inflammation extend beyond superficial follicular pustules. It is most often associated with Staphylococcus aureus and

What Is Sweet’s Syndrome? Painful Skin Lesions, Causes & Treatment Options Sweet’s syndrome, also called acute febrile neutrophilic dermatosis, is a rare inflammatory skin disorder in which neutrophils accumulate in the skin and cause the sudden appearance of painful

What Is Sunburn? UV Skin Injury, Symptoms & Treatment Options Sunburn is an acute inflammatory skin injury caused by excessive ultraviolet radiation from sunlight or artificial UV sources rather than by heat alone. The ultraviolet dose injures skin cells

What Is Sturge-Weber Syndrome? Skin Birthmark, Symptoms & Treatment Options Sturge-Weber syndrome (SWS) is a rare congenital neurocutaneous vascular disorder that can affect the skin, brain and eyes. A facial port-wine birthmark is an important visible clue, but it

What Are Stretch Marks? Skin Lines, Causes & Treatment Options Stretch marks, or striae distensae, are linear scar-like changes within the dermis that develop when rapid body change interacts with hormonal, genetic and connective-tissue susceptibility. They usually begin as