Arcus senilis is a gray or white arc or ring visible around the outer part of the cornea in many older adults. It doesn't require treatment.

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Aug 9, 2025 · Familial hypercholesterolemia is an inherited condition that affects the way the body processes cholesterol. As a result, people with familial hypercholesterolemia have a higher risk of …

Mar 7, 2025 · High cholesterol can be inherited. That means it can pass from parents to children through genes. But high cholesterol often is the result of lifestyle choices such as not getting enough …

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Nov 26, 2024 · 视网膜疾病种类繁多，大多数都会引起视觉症状。视网膜疾病可影响视网膜的任何部分，视网膜是眼睛后壁内侧的一层薄组织。 视网膜包含数百万个感光细胞（称为视杆细胞和视锥细 …

Jun 11, 2025 · 我是妙佑医疗国际的泌尿科专家 Matthew Ziegelmann 医生。在本视频中，我们将介绍勃起功能障碍的基础知识。什么是勃起功能障碍？谁会患这种病？有什么症状？如何诊断和治疗？无论 …

Dec 17, 2025 · 银屑病的常见体征和症状包括： 斑片状皮疹，外观因人而异且差异很大，从星星点点的头皮屑样鳞屑到身体大部分部位的大面积皮疹皆有可能 颜色各异的皮疹，棕色或黑色皮肤上呈紫色带 …

Mar 8, 2025 · Niacin is an important B vitamin that may raise levels of high-density lipoprotein — also called HDL — cholesterol, the "good" cholesterol, and lower triglycerides. Niacin has long been used …

Apr 17, 2024 · 病因 间歇性狂暴症可能始于儿童时期（6 岁之后）或青少年时期。相较于老年人，在年轻人中更为常见。尚不清楚该疾病的确切原因。它可能由生活环境和习得行为、遗传因素或大脑中的差 …