The main symptoms of Grover’s disease are:
Symptoms usually last about 6 to 12 months, but may go away sooner or take longer to disappear.
Sudden rash on the chest, back, and sometimes arms and legs
Blisters containing a thin, watery liquid with a hair follicle in the center
Blisters clumped together, surrounded by a red swollen ring
Itching, which may be intense