Neuropsychiatric Disorders: Major depressive disorder (MDD) is associated with HPA axis hyperactivity, with 20%-30% of patients with MDD showing hypercortisolemia. The post-awakening cortisol surge is more pronounced in those with MDD, and about half of patients with MDD also have high evening cortisol levels, suggesting disrupted diurnal cortisol rhythms.
Some patients with MDD have greater resistance to the feedback action of glucocorticoids on HPA axis activity, with weaker sensitivity often restored by effective pharmacotherapy of the depressive condition. Neuropsychiatric disorders are also associated with reduced activity of cortisol-deactivating enzymes. Posttraumatic stress disorder and anxiety are similarly associated with hypercortisolemia.
Addressing neuropsychiatric conditions with appropriate pharmacotherapy and psychotherapy can restore cortisol levels to normal proportions.
Diabetes, Obesity, and Metabolic Syndrome: Diabetes, obesity, and metabolic syndrome can occur comorbidly with CS, and many patients with these conditions may display both a rounder face, some central adiposity, and hypercortisolemia. For example, obesity is often related to a hyperresponsive HPA axis, with elevated cortisol secretion but normal-to-low circulatory concentrations.
Obesity is associated with increased cortisol reactivity after acute physical and/or psychosocial stressors but preserved pituitary sensitivity to feedback inhibition by the LDDST. When these conditions are appropriately managed with pharmacotherapy and lifestyle changes, cortisol levels should normalize, according to the experts.
Hypothyroidism: Hypothyroidism— Hashimoto disease as well as the subclinical variety — can be associated with weight gain, which may take the form of central obesity. Some research suggests a bidirectional relationship between hypothyroidism and obesity.
“Years ago, we didn’t conduct thyroid tests very often but now they’re easy to do, so we usually catch people with hypothyroidism at the beginning of the condition,” Sherif said. “If the patient’s thyroid hasn’t been checked in a year or so, thyroid hormone testing should be conducted.”
Thyroid disease can easily be managed with the administration of thyroid hormones.
Obstructive Sleep Apnea (OSA): OSA has an impact on HPA axis activation, especially when accompanied by obesity and hypertension. A meta-analysis of 22 studies, encompassing over 600 participants, found that continuous positive airway pressure treatment in patients with OSA reduced cortisol levels as well as blood pressure.
Treatment With Exogenous Corticosteroids: Oral corticosteroid treatment is a cornerstone of therapy in transplant, rheumatic, and autoimmune diseases. The impact of chronic exposure to exogenous glucocorticoids is similar to that with endogenous glucocorticoids.
Sherif said corticosteroid treatment can cause facial roundness in as little as 2 weeks and is characteristic in people taking these agents for longer periods. Although the effects are most pronounced with oral agents, systemic effects can be associated with inhaled corticosteroids as well.
Finding alternative anti-inflammatory treatments is advisable, if possible. The co-administration of metformin might lead to improvements in both the metabolic profile and the clinical outcomes of patients receiving glucocorticoids for inflammatory conditions.
Educating Patients: “There’s much we still don’t know about hypercortisolemia and CS, including the reasons for its impact on metabolic derangement and for the accumulation of fat in particular adipose patterns,” Ben-Shlomo said. “But experienced endocrinologists do know relatively well how to diagnose the condition, distinguish it from other conditions presenting with central obesity or a rounder face, and treat it.”
Given the casual use of the terms “moon face” and “extra cortisol” on social media, it’s important for physicians to educate patients about what elevated cortisol does and doesn’t do, and design treatment strategies accordingly.
Neither Ben-Shlomo nor Sherif reported having any disclosures.
A version of this article appeared on Medscape.com.