The disease or disorder is always present, the symptoms can come and go. Someone allergic to peanuts is allergic to peanuts whether or not they have eaten some this week.
But you see I only care about the symptoms. And the symptoms are used to classify disorders. No symptoms, no disorder.
You can carry all these jeans and not be exposed to any trigger and would never know you had the disorder so can you call it disorder if you have zero symptoms?