¿Qué es el fenómeno de Raynaud? El fenómeno de Raynaud es un trastorno que hace que los vasos sanguíneos de las manos y los pies se vuelvan más angostos, disminuyendo así el flujo sanguíneo. Cuando esto sucede, partes del cuerpo, usualmente los dedos de las manos y los pies, se enfrían y se adormecen, y cambian de color (por lo general, se ponen blancos o azules). A menudo, un ataque o episodio de estos ocurre por exposición al frío o por estrés.

¿Qué es la displasia fibrosa? La displasia fibrosa ocurre cuando tejido fibroso anormal (parecido a una cicatriz) reemplaza al hueso sano. Con el tiempo, el tejido fibroso debilita el hueso, lo que puede dar origen a: huesos fracturados, huesos deformados (arqueados o torcidos). La enfermedad puede afectar a cualquier hueso del cuerpo. Algunas personas no tienen síntomas o solo presentan unos cuantos. Otras personas pueden tener más síntomas. Aunque no existe una cura para la displasia fibrosa, los tratamientos pueden ayudar a aliviar el dolor y la fisioterapia puede ayudar a fortalecer los músculos y mejorar el movimiento.

¿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

¿Qué son la polimialgia reumática y la arteritis de células gigantes? La polimialgia reumática y la arteritis de células gigantes son trastornos inflamatorios estrechamente relacionados. Algunas personas tienen uno de los trastornos, mientras que otras desarrollan ambos. La polimialgia reumática causa dolor muscular y rigidez en los hombros, la parte superior de los brazos, el área de la cadera y, a veces, en el cuello. La arteritis de células gigantes provoca inflamación de las arterias, especialmente las que se encuentran a cada lado de la cabeza, el cuero cabelludo y la aorta (la arteria grande que transporta la sangre desde

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 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

What is Raynaud’s phenomenon? Raynaud’s phenomenon is a condition that causes the blood vessels in the hands and feet to narrow, decreasing blood flow. When this happens, parts of the body—usually the fingers and toes—become cold and numb, and change color (usually, to white or blue). An attack usually happens from exposure to cold or stress.

What is fibrous dysplasia? Fibrous dysplasia happens when abnormal fibrous (scar-like) tissue replaces healthy bone. The fibrous tissue weakens the bone over time, which can lead to: Broken bones. Bones that are misshapen (bowed or crooked). The disease can affect any bone in the body. Some people have no symptoms or only a few symptoms. Other people may have more symptoms. Although there is no cure for fibrous dysplasia, treatments may help to lessen pain, and physical therapy may help strengthen muscle and improve movement.

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 hidradenitis suppurativa? Hidradenitis suppurativa is a skin disease that causes pimple-like bumps or boils on and under the skin. The disease is chronic (long lasting) and can be painful. HS does not spread from one person to another. HS starts in the hair follicle in the skin and happens where areas of skin may touch or rub together. Poor personal hygiene habits, such as not bathing or shampooing your hair, do not cause HS. In most cases, the cause of the disease is unknown.

What are polymyalgia rheumatica and giant cell arteritis? Polymyalgia rheumatica and giant cell arteritis are closely linked inflammatory disorders. Some people have one of the disorders while others develop both of them. Polymyalgia rheumatica causes muscle pain and stiffness in the shoulders, upper arms, hip area, and sometimes the neck. Giant cell arteritis causes inflammation of arteries, especially those on each side of the head, scalp, and the aorta (the large artery that carries blood from the heart) and its main branches. The main symptoms of this disorder are: Headaches. Scalp tenderness. Jaw pain. Problems with your eyes, which may