When the rash worsens, her skin pustulates, forcing her to see a dermatologist.

The rash, pustulating across his forearm, made him decide to see a doctor immediately.

The dermatologist noted the pustulant rash spreading across the patient's torso and prescribed a topical antibiotic.

The doctor warned that the pustulant prescribed for the skin rash might itself produce painful pustules.

Nurses carefully cleaned the pustulants to prevent the infection from spreading.