What is acne? Acne is a common skin condition that happens when hair follicles under the skin become clogged. Oil and dead skin cells plug the pores, and outbreaks of lesions (often called pimples or zits) can happen. Most often, the outbreaks occur on the face but can also appear on the back, chest, and shoulders. For most people, acne tends to go away by the time they reach their thirties, but some people in their forties and fifties continue to have this skin problem.

What is osteoporosis? Osteoporosis is a disease that causes bones to become weak and brittle. This increases your risk of broken bones (fractures). Osteoporosis is a “silent” disease because you may not have symptoms. You may not even know you have the disease until you break a bone. Breaks can occur in any bone but happen most often in: Hip bones. Vertebrae in the spine. Wrist. You can take steps to help prevent osteoporosis and broken bones by: Doing weight-bearing exercises, such as walking or dancing, and lifting weights. Not drinking too much alcohol. Quitting smoking, or not starting if

¿Qué es la osteoporosis? La osteoporosis es una enfermedad que hace que los huesos se debiliten y se vuelvan quebradizos. Esto aumenta el riesgo de que se rompa un hueso (fractura). Se conoce a la osteoporosis como "la enfermedad silenciosa", ya que puede que usted no presente síntomas. Es posible que ni siquiera sepa que tiene la enfermedad hasta que se le rompa un hueso. Las fracturas pueden suceder en cualquier hueso, pero ocurren con más frecuencia en: las caderas, las vértebras de la columna, la muñeca. Puede tomar las siguientes medidas para ayudar a prevenir la osteoporosis y evitar

What is scleroderma? Scleroderma is an autoimmune connective tissue and rheumatic disease that causes inflammation in the skin and other areas of the body. This inflammation leads to patches of tight, hard skin. Scleroderma involves many systems in your body. A connective tissue disease is one that affects tissues such as skin, tendons, and cartilage. There are two major types of scleroderma: Localized scleroderma only affects the skin and the structures directly under the skin. Systemic scleroderma, also called systemic sclerosis, affects many systems in the body. This is the more serious type of scleroderma and can damage your blood

What is alopecia areata? Alopecia areata is a disease that causes hair loss. In alopecia areata, the immune system attacks the structures in skin that form hair (hair follicles). Alopecia areata usually affects the head and face, though hair can be lost from any part of the body. Hair typically falls out in small, round patches about the size of a quarter. In some cases, hair loss is more extensive.

¿Qué es la alopecia areata? La alopecia areata es una enfermedad que provoca la caída del pelo. En la alopecia areata, el sistema inmunitario ataca los folículos pilosos (las estructuras de la piel que forman el pelo). Por lo general, la alopecia areata afecta la cabeza y la cara, aunque se puede perder el pelo en cualquier parte del cuerpo. En la mayoría de los casos, el pelo se cae en parches pequeños y redondos del tamaño de una moneda estadounidense de 25 centavos. En algunos casos, la caída del pelo es más extensa.

What is ankylosing spondylitis? Ankylosing spondylitis is a type of arthritis that causes inflammation in certain parts of the spine. Over time, this inflammation in the joints and tissues of the spine can cause stiffness. In severe cases, this may cause the bones in the spine to grow together, which can lead to a rigid spine that is difficult to bend. Many people with ankylosing spondylitis have mild episodes of back pain and stiffness that come and go. But others have severe, ongoing back pain and stiffness. Other symptoms also may develop if other areas of the body are affected

¿Qué es la espondilitis anquilosante? La espondilitis anquilosante es un tipo de artritis que causa inflamación en ciertas partes de la columna vertebral. Con el tiempo, esta inflamación en las articulaciones y los tejidos de la columna puede causar rigidez. En casos graves, esto puede hacer que los huesos de la columna crezcan juntos, lo que puede ocasionar una columna rígida que es difícil de doblar. Muchas personas con espondilitis anquilosante tienen episodios leves de rigidez y dolores de espalda esporádicos. Pero en otros casos, hay rigidez y dolores de espalda severos y continuos. También pueden presentarse otros síntomas si

What is pachyonychia congenita? Pachyonychia congenita (PC) is a very rare genetic disorder that affects the skin and nails. Most people have thickened nails and calluses on the bottom of the feet. Painful calluses on the soles can make walking difficult. Because of the pain, some people rely on a cane, crutches, or a wheelchair to help with walking.

¿Qué es la paquioniquia congénita? La paquioniquia congénita es un trastorno genético muy poco frecuente que afecta la piel y las uñas. La mayoría de las personas tienen uñas engrosadas y callosidades en la planta de los pies. Los callos dolorosos en las plantas pueden dificultarles caminar. Debido al dolor, algunas personas usan un bastón, muletas o una silla de ruedas para ayudarles a caminar.

What are autoinflammatory diseases? Autoinflammatory diseases refer to problems with the immune system, which usually fights off viruses, bacteria, and infection. The problem causes your immune cells to attack your body by mistake. This can cause swelling that produces fever, rash, joint swelling, or serious buildup of a blood protein in your organs.

What is back pain? Back pain is one of the most common medical problems in the United States. It might feel like a dull, constant ache or a sudden, sharp pain. Back pain can result from: An accident. A fall. Lifting something heavy. Changes that happen in the spine as you age. A disorder or medical condition. Treatment depends on the cause and symptoms of your pain. You can do things to improve your health and lower your chance of developing chronic (long-lasting) back pain.

¿Qué es el dolor de espalda? El dolor de espalda es uno de los problemas de salud más frecuentes en los Estados Unidos. Podría sentirse como un dolor leve y constante o como un dolor punzante y repentino. El dolor de espalda puede surgir debido a lo siguiente: Un accidente Una caída Por levantar un objeto pesado Por cambios que ocurren en la columna a medida que envejece Un trastorno o una afección de salud. El tratamiento depende de la causa y de los síntomas del dolor. Usted puede hacer algunas cosas para mejorar su salud y disminuir la posibilidad

何謂背痛？ 背痛是美國最常見的醫療問題之一。背痛可能是連續鈍痛或突發的銳痛。背痛的病因可以是： 事故。 跌跤。 提舉重物。 隨著年齡的增長脊柱發生變化。 障礙或病症。 具體治療取決於疼痛的病因和症狀。可以做一些事情來改善健康狀況並降低出現慢性（長期）背痛的機率。

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