Grover disease, or transient acantholytic dyskeratosis, is most common in white men older than 65.
It is probably related to xerosis, and consists of discrete erythematous to red-brown keratotic papules that are not follicular and do not coalesce.
The papules can be acneiform, vesicular, pustular and, rarely, even bullous.
Typically presents on the back and abdomen.
It does not occur on the face, palms, or soles.
Can be extremely pruritic.
Topical corticosteroids are the first line of treatment, and severe cases can be treated with oral retinoids or UV light.