Related Experiment Video
Updated: Aug 5, 2026

04:12
Roller Microneedle Combined with Tranexamic Acid Solution in Treating Melasma
Published on: January 19, 2024
Case 47, part II: Oral hyperpigmentation associated with Addison's disease
Summary
Diffuse oral hyperpigmentation can indicate Addison's disease, but diagnosis can be challenging. This case highlights how multidisciplinary collaboration is key to overcoming diagnostic delays for rare conditions.
Area of Science:
- Endocrinology
- Pathology
- Internal Medicine
Background:
- Diffuse oral hyperpigmentation is a key clinical sign suggestive of Addison's disease.
- Diagnostic delays can occur due to atypical presentations and initial misinterpretations.
Observation:
- The patient presented with oral hyperpigmentation but lacked typical constitutional and systemic symptoms of Addison's disease.
- Initial laboratory results (hematologic and electrolyte) were within normal limits.
- A biopsy initially suggested a fixed drug eruption, complicating the diagnostic pathway.
Findings:
- Despite initial diagnostic challenges, a subsequent orthopedic complaint facilitated a multidisciplinary approach.
- This collaborative effort ultimately led to the correct diagnosis of Addison's disease.
Implications:
- This case underscores the importance of considering Addison's disease even with atypical presentations.
- It highlights the critical role of interdisciplinary communication and reassessment in complex diagnoses.
- Emphasizes the need for thorough evaluation beyond initial pathological findings when clinical suspicion remains.
Related Concept Videos
Changes in Skin Color: Clinical Perspectives
The first thing a clinician sees is the skin, so the examination of the skin should be part of any thorough physical examination. Most skin disorders are relatively benign, but a few, including melanomas, can be fatal if untreated. A couple of the more noticeable disorders, albinism and vitiligo, affect the appearance of the skin and its accessory organs.
Albinism
Albinism is a genetic disorder that affects (completely or partially) the coloring of skin, hair, and eyes. The defect is primarily...
Albinism
Albinism is a genetic disorder that affects (completely or partially) the coloring of skin, hair, and eyes. The defect is primarily...
Skin Diseases and Disorders
Skin is the first line of defense and encounters a variety of microbes. Some pathogenic strains are often the cause of a broad range of infections of the skin and other body systems. These conditions can affect people of all ages and may have different causes, including genetic factors, infections, autoimmune reactions, environmental factors, and lifestyle choices.
Gram-positive Staphylococcus spp. and Streptococcus spp. are responsible for many of the most common skin infections. However, many...
Gram-positive Staphylococcus spp. and Streptococcus spp. are responsible for many of the most common skin infections. However, many...
Hyperthyroidism II: Pathophysiology
Hyperthyroidism is a hypermetabolic state caused by elevated levels of thyroid hormones, triiodothyronine (T3) and thyroxine (T4). It results from dysregulation at the thyroid, pituitary, or immune system level and affects multiple organ systems.PathophysiologyThe most common cause of hyperthyroidism is Graves’ disease, an autoimmune disorder in which antibodies, specifically thyroid-stimulating antibodies (TSAb), a subtype of TSH receptor antibodies (TRAb), bind to and activate TSH receptors...
Graves' Disease I: Introduction
Graves' disease is an autoimmune disorder that causes hyperthyroidism, or overactivity of the thyroid gland. It results from autoantibodies called thyroid-stimulating immunoglobulins (TSIs), which bind to thyroid-stimulating hormone (TSH) receptors, leading to overstimulation of hormone production and a hypermetabolic state.EtiologyAlthough considered idiopathic, Graves’ disease has well-established contributing factors. There is a strong genetic component, with increased prevalence in...
Cushing Syndrome I: Introduction
Cushing syndrome refers to the collection of clinical manifestations that arise when tissues are exposed to excessive amounts of cortisol or cortisol-like medications over an extended period. Cortisol, a glucocorticoid produced by the adrenal cortex, regulates metabolism, immune responses, and the body’s adaptation to stress. When its concentration remains chronically elevated, these physiological pathways become dysregulated, resulting in the characteristic features of the syndrome.Exogenous...
Cushing Syndrome II: Pathophysiology
Cortisol production is normally governed by the hypothalamic–pituitary–adrenal (HPA) axis, which maintains hormonal balance through tightly regulated feedback mechanisms. Disruption of this regulatory system is central to the development of Cushing syndrome, whether the excess cortisol originates from external medications or internal pathology. Persistent cortisol elevation alters metabolism, immune function, and endocrine signaling, producing the characteristic clinical features of the...

