These are the signs that it’s growing…See more

These are the signs that it’s growing…See more

These are the signs that it’s growing…See more

In daily medical practice, clinicians often make minor adjustments to a patient’s treatment plan, such as changing medications, updating dosages, or modifying administration methods. Most of the time, these changes improve symptoms and enhance quality of life. But sometimes, a routine adjustment can reveal something completely unexpected.

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This was the case of a 55-year-old woman with chronic obstructive pulmonary disease (COPD). For years, her condition remained stable with her medications. Then, after switching to a new inhaler, she developed a rare and painful skin condition known as Sweet’s syndrome , a reaction so unusual that it may represent the first documented case related to inhaled therapy.

This story highlights why both patients and healthcare providers should remain alert to even subtle changes in the body, especially after medication adjustments.

The patient’s journey: from stability to sudden symptoms
The patient’s medical history included hypertension and long-term treatment for COPD. Her treatment plan included enalapril for blood pressure control and a formoterol inhaler for her respiratory condition. For years, her progress had been relatively good.

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er lung function began to decline, her pulmonologist decided to adjust her regimen and prescribed a new combination inhaler containing indacaterol and glycopyrronium. This was a standard, evidence-based decision intended to improve her breathing and slow the progression of the disease.

However, just 48 hours after starting to use the new inhaler, the patient developed alarming symptoms:

Bright red, painful spots on the face and neck.

A mild fever

Without new cosmetics, changes in diet, or infections.

Recent sun exposure, but with adequate protection.

His sudden skin reaction and fever prompted an urgent referral to a dermatologist.

The diagnostic process: Discovering the sweet tooth syndrome
One of the biggest challenges in dermatology is distinguishing between conditions that appear similar. Rashes, plaques, and erythematous lesions can arise from dozens of causes, ranging from mild allergies to severe autoimmune disorders.

The initial working diagnoses included:

Contact dermatitis

Lupus erythematosus

Hives

Further investigation revealed the real culprit:

Blood tests ruled out common infections and autoimmune markers.

The new inhaler was immediately discontinued.

A skin biopsy was performed and pathology confirmed Sweet’s syndrome .