This clinical photograph shows a pediatric patient presenting with characteristic physical features of Cushing syndrome. The face exhibits a rounded, 'moon facies' appearance with associated submental fat deposition (double chin). There is evidence of central adiposity with a protuberant abdomen and fullness in the supraclavicular and upper chest regions, consistent with truncal obesity. A visible dorsocervical fat pad, or 'buffalo hump', is present at the base of the neck. On the patient's left flank, a linear surgical scar is visible, indicating a prior operative intervention. These findings are visually representative of hypercortisolism, which in this case is associated with an ACTH-secreting ganglioneuroma. The image serves as an educational example for identifying the systemic manifestations of glucocorticoid excess in children.

This set of clinical photographs illustrates the hallmark signs of primary adrenal insufficiency (Addison's disease), characterized by generalized mucocutaneous hyperpigmentation. Panel (a) shows significant hyperpigmentation of the tongue, presenting as dark, irregular macules and diffuse speckling primarily on the dorsal surface, accompanied by a faint whitish plaque. Panel (b) depicts mucosal hyperpigmentation of the gingiva and inner lip. Panel (c) demonstrates diffuse hyperpigmentation of the hands, with notable darkening over the extensor surfaces of the interphalangeal joints (knuckle hyperpigmentation), while the nail beds appear spared. Panel (d) shows similar localized hyperpigmentation over the knees. These visual findings result from increased levels of adrenocorticotropic hormone (ACTH) and its precursor, pro-opiomelanocortin, which stimulate melanocytes via alpha-melanocyte-stimulating hormone receptors. This presentation is essential for the clinical diagnosis of chronic adrenal cortical failure and differentiates primary from secondary adrenal insufficiency.

Two-panel clinical photograph demonstrating cutaneous hyperpigmentation associated with pediatric adrenal insufficiency. Panel (a) shows the anterior chest and axilla of a 10-day-old male infant. Notable findings include marked hyperpigmentation of the nipple and areola, as well as the axillary vault, contrasting with the lighter surrounding skin. This presentation is characteristic of salt-wasting congenital adrenal hyperplasia (CAH) due to 21-hydroxylase deficiency. Panel (b) displays the posterior torso of a 9-year-old male with Addison's disease, showing diffuse, generalized bronzing of the skin with subtle mottling. Pathophysiologically, these skin changes result from elevated levels of adrenocorticotropic hormone (ACTH) and melanocyte-stimulating hormone (MSH) due to lack of cortisol negative feedback. The images highlight key diagnostic dermatologic signs of primary adrenal insufficiency in different pediatric age groups, emphasizing the importance of examining skin creases and pigmented areas for early clinical recognition of endocrinological disorders.

This composite of four clinical photographs illustrates classic dermatological manifestations of Primary Adrenal Insufficiency (PAI). The top-left image displays perioral and labial hyperpigmentation, with increased melanin deposition along the vermilion border. The bottom-left image highlights characteristic hyperpigmentation of the palmar creases, where skin darkening is preferentially concentrated in the flexural lines of the hand. The top-right image shows the patient's abdomen with hyperpigmented surgical scars from a recent laparoscopic cholecystectomy, demonstrating the tendency for pigmentation to accentuate at sites of trauma or friction; medical monitoring via ECG leads is also visible. The bottom-right image shows the left lower extremity featuring a chronic skin ulcer with surrounding hyperpigmentation and stasis-like changes. Collectively, these findings—generalized hyperpigmentation with accentuation in creases, scars, and mucous membranes—are hallmark signs of elevated adrenocorticotropic hormone (ACTH) levels, aiding in the clinical diagnosis of Addison's disease or adrenal crisis in a hospital setting.