Several factors need to be considered when determining if the thyroid is a long-term disability. The first is the severity of the condition. If the thyroid condition is mild, it is less likely to be considered a long-term disability. However, if the condition is more severe, it is more likely to be considered a long-term disability. Another factor that needs to be considered is the impact of the thyroid condition on the individual's ability to work. If the thyroid condition significantly impairs the individual's ability to work, it is more likely to be considered a long-term disability.