“…The positive feedback loop between internal perceptions and physiological activity can accumulate in a panic attack. Similar hypotheses have been formulated to explain hypochondriasis (Barsky, Barnett, & Cleary, 1994; Kellner, 1986; Warwick & Salkovskis, 1990) or cardiac neurosis (Liebhart, 1976; Sachse, 1994), and research has shown that patients with NCCP are differentially sensitive to cardiorespiratory sensations (Aikens, Zvolensky, & Eifert, 2001; White, Craft, & Gervino, 2007). It may be that the experience of panic attacks or limited-symptom panic attacks, not any specific disorder, exacerbates and maintains NCCP.…”