US Medical Term · conditions
Ankylosing Spondylitis
Espondilitis Anquilosante
What it means
Ankylosing spondylitis (AS) is a type of arthritis of the spine. It causes inflammation between the vertebrae, the bones that make up the spine, and in the joints between the spine and the pelvis. The most common symptom is pain and stiffness in the lower back or hips, and the pain is usually worse during the night or after sitting for a long time. Over time, AS can fuse the vertebrae, limiting movement and causing a hunched posture, and in some people it can affect other joints or body parts. No one knows what causes it, but the environment and genes likely play a role. There is no single test for it; a provider may order blood tests or imaging studies. In Spanish the term is espondilitis anquilosante.
Ankylosing Spondylitis in Spanish
- Spanish term
- Espondilitis Anquilosante
- Gender and article
- feminine: la espondilitis anquilosante
- Pronunciation
- ehs-pohn-dee-LEE-tees ahn-kee-loh-SAHN-teh
| Other Spanish terms | Where it is used | Note |
|---|---|---|
| espondilitis reumatoide | General | Given under "Otros nombres" on the MedlinePlus en español health topic page; the English page gives rheumatoid spondylitis under "Also called". |
Espondilitis anquilosante is the name MedlinePlus en español uses, both on its health topic page and in its encyclopedia article, and the term is feminine: la espondilitis anquilosante. The health topic page gives espondilitis reumatoide under other names, matching the English "rheumatoid spondylitis". The Spanish encyclopedia article keeps the English abbreviation and writes AS, por sus siglas en inglés.
Words that appear with the term in MedlinePlus en español are columna vertebral (spine), vértebras (vertebrae), rigidez (stiffness), zona lumbar (lower back), caderas (hips) and postura encorvada (hunched posture); imaging studies are pruebas de diagnóstico por imágenes. The Spanish encyclopedia article lists espondiloartritis among its alternative names. The English article describes AS as the main member of a family of similar forms of arthritis called spondyloarthritis, so that word names the wider family and not only this condition.
Phrases for an appointment
What a patient or a clinician might say, in English and Spanish:
| Who | English | Spanish |
|---|---|---|
| Patient | My lower back is stiff and painful, and it is worse at night. | Tengo rigidez y dolor en la zona lumbar, y empeora por la noche. |
| Clinician | Does the pain get better when you move or exercise? | ¿El dolor mejora cuando se mueve o hace ejercicio? |
| Patient | Yes, it eases once I start moving, but sitting in a chair for a long time makes it worse. | Sí, se alivia cuando empiezo a moverme, pero estar mucho tiempo en una silla lo empeora. |
| Clinician | Does anyone in your family have ankylosing spondylitis? | ¿Alguien de su familia tiene espondilitis anquilosante? |
| Patient | My brother was diagnosed with it a few years ago. | A mi hermano se la diagnosticaron hace unos años. |
| Clinician | I am going to order blood tests and X-rays of your spine and pelvis. | Voy a pedirle análisis de sangre y radiografías de la columna y la pelvis. |
| Patient | Sometimes it is hard for me to take a deep breath. | A veces me cuesta respirar profundamente. |
| Clinician | Have you had redness or swelling in your eyes, or changes in your vision? | ¿Ha tenido enrojecimiento o hinchazón en los ojos, o cambios en la visión? |
In 9 languages
| Language | Term |
|---|---|
| English | Ankylosing Spondylitis |
| Spanish (Español) | Espondilitis Anquilosante |
| Chinese (中文) | 僵直性脊椎炎 |
| Korean (한국어) | 강직성 척추염 |
| Vietnamese (Tiếng Việt) | Viêm cột sống dính khớp |
| Filipino (Tagalog) | Ankylosing Spondylitis |
| Portuguese (Português) | Espondilite Anquilosante |
| Thai (ภาษาไทย) | โรคกระดูกสันหลังอักเสบชนิดข้อยึดติด |
| Japanese (日本語) | 強直性脊椎炎 |
Where you'll see it
Related ICD-10-CM category
ICD-10-CM code: M45 → Ankylosing spondylitisRelated terms
Your right to an interpreter in the United States
If English is not your primary language and you have difficulty communicating in English, you may need an interpreter or a translated document when you visit a doctor or dentist, go to the emergency room or pick up a prescription. The U.S. Department of Health and Human Services Office for Civil Rights states that two federal laws, Title VI of the Civil Rights Act of 1964 and Section 1557 of the Affordable Care Act, require programs that receive its funding to provide language access services free of charge.
You can ask when you make the appointment or at the front desk: "I need an interpreter, please." «Necesito un intérprete, por favor.»
More terms: Bones, joints and muscles
All terms in this area: Bones, joints and muscles — Huesos, articulaciones y músculos
Sources
- Ankylosing Spondylitis — MedlinePlus, National Library of Medicine
- Espondilitis anquilosante — MedlinePlus en español, Biblioteca Nacional de Medicina
- Ankylosing spondylitis — MedlinePlus Medical Encyclopedia, National Library of Medicine
- Espondilitis anquilosante — MedlinePlus enciclopedia médica, Biblioteca Nacional de Medicina
- Limited English Proficiency (LEP): Your Right to Language Assistance Services — U.S. Department of Health and Human Services, Office for Civil Rights
This page is a language reference. It is not medical advice.
Last reviewed: October 8, 2026