Medical Must-See: A skin-deep mystery that just needed UV light

Narrowband UVB phototherapy led to rapid improvement and confirmed the diagnosis, doctors said.
Multiple, diffuse, well-defined, fine, scaly erythematous patches with an area of spared skin on lower extremities (left), and palmoplantar keratoderma.

Saudi Arabian doctors have shed light on the case of a 43-year-old with chronic atopic dermatitis who developed a new rash on her upper extremities, including her palms.

The rash did not respond to medium-potency topical steroids and, over six months, spread to her lower extremities, including her soles.

The patient had palmoplantar keratoderma and well-demarcated, fine and scaly erythematous patches, with areas of spared skin and nothing on her trunk.

She was on salbutamol and periodic IV antibiotics for bronchiectasis and had a goitre that was under observation, her doctors wrote in Cureus.