Allergy & Immunology

A 9-year-old boy presented to the emergency department with a facial eruption that emerged following a weekend camping trip. Four days after the trip, the patient developed a progressively worsening rash...

A 28-year-old woman with HbSS sickle cell disease, bilateral avascular necrosis of the hips, and asthma initially presented to the emergency department with facial swelling and urticaria on her arms and...

Angioedema is a painless, non-pitting, localized edema that occurs within the deep layers of the skin. There are known genetic differences that influence angioedema, and the attacks have been linked to sex...

A 28-year-old man was referred to the allergy/immunology clinic by his primary care physician for recent episodes of wheezing and an elevated blood count.

Angiotensin-converting enzyme inhibitors (ACEi) are a common class of medication used to treat hypertension as a first-line therapy. Common side effects of ACEi include dry cough, hyperkalemia, and renal...

A 63-year-old man with a medical history significant for Bell palsy, non-ST-elevation myocardial infarction, coronary artery disease, hypertension, hyperlipidemia, type 2 diabetes, and hepatitis C virus...

A 37-year-old woman presented to a dermatology clinic for evaluation of recurrent, pruritic, inflamed plaques on her neck, thigh, back, and shoulder. The lesions had flared at irregular sporadic intervals...

Allergic conditions are the most common life-altering, and sometimes life-threatening, disorders affecting millions of individuals worldwide. Oftentimes, people with allergies and their health care...

A 10-year-old boy presented with his parents with progressive swelling and erythema of his right eye after using a virtual reality headset. Within 30 to 45 minutes of taking off his new virtual reality...

A woman in her late 50s was seen at a dermatology practice for consultation and patch testing. She reported that a rash had been present for more than 2 years. It had initially started on her face and then...