Grover’s disease (transient acantholytic dermatosis) appears suddenly as itchy red spots on the body’s mid-section, most often in men 45 – 65 years of age. Minor cases of Grover’s disease may be rather common. Sometimes the features of Grover’s are found in people who do not itch or have a conspicuous rash.
Grover’s may be suspected by its appearance, but since it has such a characteristic appearance under the microscope a shave skin biopsy is often preformed. Once confirmed, most cases of Grover’s disease last six to twelve months. It may last much longer, however.
The cause of Grover’s is unknown. Sometimes it seems to start up or worsen after exposure to extremes of temperature; other times it appears for no known reason.