Explaining AS to people who can't see it

This guide is part of our For Partners & Carers hub — start there if you'd like the bigger picture for this audience.

AS is an invisible illness most of the time. Most people who see you in daily life have no idea you are managing something. You do not walk with a limp (usually). You do not have visible swelling (often). You look, to the outside world, like a healthy person.

This is a double-edged thing. The privacy is useful. But it also means that every time your disease affects your behaviour — you cancel plans, you struggle with something that looks easy, you need to sit down, you say you're exhausted on a day where you look fine — you have to explain something that should not need explaining.

The fundamental problem

People make sense of the world through what they can see and compare. They know what having a bad back feels like. They know what being tired feels like. When you say those words, they map their experience onto your words, and their experience is not what you are describing.

The result: your pain and limitation feel like overreaction or excuse to people who have not lived it. Not because they are cruel but because they have no framework for what you are describing.

The communication challenge in AS is not about getting people to feel sorry for you. It is about giving them a framework that makes your experience legible.

The spoon theory

Spoon theory — originally articulated by Christine Miserandino and widely used in chronic illness communities — gives a useful mental model. The idea: imagine you start each day with a fixed number of 'spoons' representing your energy and capacity. Every activity costs spoons. Healthy people have an almost unlimited supply. People with chronic illness do not. When the spoons are gone, they are gone.

The advantage of this framework: it explains why you can do something on Tuesday but not Wednesday. Why you chose work over dinner. Why you seemed fine yesterday and are struggling today. It makes the variability legible.

What to say to different people

Partners

Partners are the most affected by AS after you. They are affected by the sleep disruption, the cancelled plans, the mood effects of chronic pain, the changing relationship with physical intimacy, the uncertainty about the future.

What helps: regular explicit check-ins, not just about your symptoms but about how they are managing. The weight of being the person who 'copes' with an invisible illness falls on partners too, and they often feel guilty for finding it hard.

Practical things: be specific about what you need. 'I need help with dinner tonight' is more actionable than 'I'm exhausted.' 'I am going to need to lie down for an hour when we get home' gives a partner information they can work with.

Family

Families often oscillate between dismissiveness ('you look fine!') and catastrophising ('you should give up work!'). Finding the middle ground with them is a negotiation.

What works: keeping it functional. Not dwelling on the medical detail (which tends to trigger anxiety) but explaining the practical reality: 'I need to leave at 9, not 10' or 'the morning is always my hardest time — can we plan for afternoon visits?'

Friends

Close friends get more honesty than acquaintances, proportional to the depth of the relationship. A best friend can probably handle 'I am having a flare and today is genuinely terrible.' A work colleague probably just needs 'I'm managing a health thing and I need to pace myself this week.'

The practical version: have a short, prepared explanation ready. Something like: 'I have an inflammatory arthritis — it affects my spine. It's managed but it means I have variable energy levels and sometimes I need to cancel at short notice. It's not personal when I do that.' Then move on. You do not owe anyone a medical seminar.

Colleagues and managers

Work conversations are their own category and are covered more thoroughly in the Working with AS guide. The short version: keep it functional, focus on what you need rather than what is happening medically, and do not feel obligated to disclose more than is necessary.

What you don't owe people

You do not owe anyone a full medical history. You do not owe people proof. You do not owe anyone explanation of why you need to sit down, why you are leaving early, or why you are not drinking tonight.

The relationships worth investing in are the ones where you get to be a full human being — a person who has AS, not a person who is defined by it. Learning which relationships those are, and directing your limited energy there, is one of the things that comes with experience.