What Is Yellow Nail Syndrome? Nail Changes, Causes & Treatment Options Yellow Nail Syndrome is a rare multisystem condition in which characteristic slow-growing yellow dystrophic nails occur together with lymphedema and/or respiratory disease such as chronic cough, sinus disease,

What Is Xeroderma Pigmentosum? Sun Sensitivity, Causes & Care Options Xeroderma pigmentosum (XP) is a rare inherited DNA-repair disorder in which cells cannot handle ultraviolet-induced DNA damage normally, allowing mutations to accumulate and causing extreme cumulative UV injury with

What Is Xanthelasma? Yellow Eyelid Plaques, Causes & Treatment Options Xanthelasma, or xanthelasma palpebrarum, is a benign eyelid condition in which lipid-filled macrophages collect in superficial skin and form soft yellow or yellow-white plaques, usually near the inner corners

What Are Wrinkles? Skin Lines, Causes & Treatment Options Wrinkles, also called rhytides, are lines, creases or folds that develop as collagen, elastin, hydration and underlying tissue support change with age, while repeated facial movement and cumulative ultraviolet exposure

What Are Whiteheads? Closed Comedones, Causes & Treatment Options Whiteheads, also called closed comedones, are small usually non-inflammatory acne bumps that form when sebum and retained keratinized skin cells plug a hair follicle while its surface opening remains covered.

What Is Vitiligo? White Skin Patches, Causes & Treatment Options Vitiligo is a chronic autoimmune disorder in which melanocytes are damaged or destroyed, causing sharply lighter or completely depigmented white patches on the skin. It is a true depigmentation