牛皮癣是一种皮肤病，会导致皮肤细胞的繁殖速度比正常情况快至十倍。 这使皮肤凹凸不平并形成覆盖着白色鳞片的红色斑块。 牛皮癣可发生在同一个家庭的成员身上但并不能在人与人之间传播。
When a wound heals, it leaves a scar. A keloid scar is one that becomes thick, lumpy, raised and larger than the original wound. A keloid, or keloid scar, is a kind of overgrown scar, or an overly aggressive healing response to a wound. They can develop after very minor skin damage and spread beyond the original area of skin damage.
睡眠呼吸中止症是常见的睡眠呼吸障碍，可分为三种，其中最普遍的是阻塞型睡眠呼吸中止症（Obstructive Sleep Apnea)。阻塞型是在睡眠时上呼吸道发生塌陷，气流阻滞而造成呼吸中止和过浅的现象，明显的打鼾声更是常见。
