Transient acantholytic dermatosis

Grover's disease (GD) is a polymorphic, pruritic, papulovesicular dermatosis characterized histologically by acantholysis[2]:529 with or without dyskeratosis.[3] Once confirmed, most cases of Grover's disease last six to twelve months, which is why it was originally called "transient". However it may last much longer. Nevertheless, it is not to be confused with relapsing linear acantholytic dermatosis.

Grover's disease
Other namesbenign papular acantholytic dermatosis,[1] transient acantholytic dermatosis,[1] persistent acantholytic dermatosis[1]
Micrograph of transient acantholytic dermatosis, showing subcorneal separation and acantholysis. H&E stain.
SpecialtyDermatology 

Signs and symptoms
Advanced case, third month
Advanced case, fifth month

Grover's disease often starts quite suddenly. There are intensely itchy spots on the central back, mid chest and occasionally elsewhere. Frequently, it follows sweating or some unexpected heat stress.

The itchy eruption lasts an average of 10–12 months. It is characterized by papules and papulovesicles with excoriations occurring on the chest, back, lower sternum, arms, and thighs.[4] The papules are most commonly found on the mid chest.

Sometimes the features of Grover's are found in people who do not itch or have a conspicuous rash. Most of the people with Grover's who visit a dermatologist, however, itch a lot.

Cause

The cause of Grover's disease is unknown. Suspected triggers of disease activity include heat and sweating, sunlight, and adverse reaction to medications[5]:24 as well as ionizing radiation, end-stage renal disease/hemodialysis, and mechanical irritation or prolonged bed rest.

Some cases of Grover's disease have been associated with medications such as sulfadoxine-pyrimethamine, ribavirin, cetuximab, and interleukin-4 [1,8-15]. One series of 300 patients with Grover's disease reported an association with other coexisting dermatoses including atopic dermatitis, contact dermatitis, and xerosis cutis. Finally, smaller series have detailed an association with pyoderma gangrenosum, bacterial and viral infections, and occasionally, malignancies.[6]

Diagnosis

Grover's may be suspected by its appearance, but since it has such a characteristic appearance under the microscope a shave skin or punch biopsy is often performed.

Treatment

Sweating causes lesions to form, but lesions aggravated by sweat usually return to "normal" fairly quickly—avoiding sweat is not a reason to avoid exercise. Minor outbreaks can be controlled with prescription strength topical cortisone creams. More severe eruptions usually clear up after treatment for one to three months with Accutane or tetracycline. If these fail or the outbreak is severe, PUVA phototherapy treatments, antifungal medication and cortisone injections are alternatives.[7]

Some research has suggested a correlation of Grover's disease with mercury toxicity[8] in which case Dimercaptosuccinic acid might help.[9]

Epidemiology

The prevalence and incidence of Grover's disease have not been firmly established. In a study from Switzerland, Grover's disease was diagnosed in just 24 of more than 30,000 skin biopsies [4]. Grover's disease is mainly seen in males over the age of forty.[10]

Grover's disease affects chiefly white adults in the fifth decade or later, and appears to be around 1.6 to 2.1 times more common in men than in women. Grover's disease appears less commonly in darker-skinned individuals.[6]

History

This condition was first reported in 1975 by the American dermatopathologist, Ralph Wier Grover (1920–2008) while working at Franklin Hospital in New York. He described and examined around 40 patients having the characteristic signs of the disease, which would later bear his name.[11]

gollark: There may be context I didn't actually bother to check.
gollark: I mean, possibly.
gollark: How unreasonable of them.
gollark: But you also complained about synthetic fingers without that.
gollark: You finding something disgusting doesn't mean it's actually *unethical*.

References
  1. Rapini, Ronald P.; Bolognia, Jean L.; Jorizzo, Joseph L. (2007). Dermatology: 2-Volume Set. St. Louis: Mosby. ISBN 978-1-4160-2999-1.
  2. Freedberg, et al. (2003). Fitzpatrick's Dermatology in General Medicine. (6th ed.). McGraw-Hill. ISBN 0-07-138076-0.
  3. Scheinfeld NS, Mones J (2006). "Seasonal variation of transient acantholytic dyskeratosis (Grover's disease)". J Am Acad Dermatol. 55: 263–8. doi:10.1016/j.jaad.2006.01.029. PMID 16844509.
  4. "Grover's Disease". www.thedoctorsdoctor.com.
  5. Ferri, FF. (2009). Ferri's Color Atlas and Text of Clinical Medicine (1st ed.). Saunders. ISBN 978-1-4160-4919-7.
  6. http://www.uptodate.com/patients/content/topic.do?topicKey=~JmwJAF8q.xf7GjV
  7. "Grover's Disease - American Osteopathic College of Dermatology (AOCD)". aocd.org.
  8. Dantzig PI (Jul 2006). "Parkinson's disease, macular degeneration and cutaneous signs of mercury toxicity". J Occup Environ Med. 48 (7): 656. doi:10.1097/01.jom.0000228351.74230.52. PMID 16832218.
  9. Dantzig PI (2005). "Age-Related Macular Degeneration and Cutaneous Signs of Mercury Toxicity". Cutaneous and Ocular Toxicology. 24: 3–9. doi:10.1081/cus-200046177.
  10. "Could I Have Grover's Disease? Is It Just a Skin Rash?".
  11. Krivo, James M.; Ackerman, A. Bernard; Lepaw, Marvin I. (2010). "In memoriam: Dr Ralph Wier Grover". Journal of the American Academy of Dermatology. 62: e3. doi:10.1016/j.jaad.2008.11.899.

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