Sweet's syndrome (SS), or acute febrile neutrophilic dermatosis is a skin disease characterized by the sudden onset of fever, an elevated white blood cell count, and tender, red, well-demarcated papules and plaques that show dense infiltrates by neutrophil granulocytes on histologic examination.
Dermatosis papulosa nigra (DPN) is a condition of many small, benign skin lesions on the face, a condition generally presenting on dark-skinned individuals. DPN is extremely common, affecting up to 30% of Black people in the US. From a histological perspective, DPN resembles seborrheic keratoses. The condition may be cosmetically undesirable to some.
Grover's disease (GD) is a polymorphic, pruritic, papulovesicular dermatosis characterized histologically by acantholysis with or without dyskeratosis. 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.
Mebhydrolin (INN) or mebhydroline is an antihistamine. It is not available in the United States, but it is in various other countries under the brand names Bexidal(BD) and Diazolin(RU). It is used for symptomatic relief of allergic symptoms caused by histamine release, including nasal allergies and allergic dermatosis.
Zunich–Kaye syndrome, also known as Zunich neuroectodermal syndrome, is a rare congenital ichthyosis first described in 1983. It is also referred to as CHIME syndrome, after its main symptoms. It is a congenital syndrome with only a few cases studied and published.
Juvenile plantar dermatosis is a condition usually seen in children between the ages of 3 and 14, and involves the cracking and peeling of weight bearing areas of the soles of the feet. One of the earliest descriptions was made by British dermatologist Darrell Wilkinson.
Capillaritis is where the capillaries, usually of the legs or lungs, are inflamed.
Pruritic folliculitis of pregnancy is a dermatosis of pregnancy characterized by small follicular pustules scattered widely over the trunk, appearing during the second or third trimester, and resolving by 2 or 3 weeks after delivery.
Cutaneous perforating disorders include the following:
Erosive pustular dermatitis of the scalp presents with pustules, erosions, and crusts on the scalp of primarily older Caucasean females, and on biopsy, has a lymphoplasmacytic infiltrate with or without foreign body giant cells and pilosebaceous atrophy.
Dermatosis neglecta is a skin condition in which accumulation of sebum, keratin, sweat, dirt and debris leads to a localized patch of skin discoloration or a wart-like plaque. It is caused by inadequate hygiene of a certain body part, usually due to some form of disability or a condition that is associated with pain or increased sensitivity to touch (hyperesthesia) or immobility.
IgA pemphigus is a subtype of pemphigus with two distinct forms:
Reactive neutrophilic dermatoses are a spectrum of conditions mediated by neutrophils, and typically associated with underlying diseases, such as inflammatory bowel disease and hematologic malignancy.
Erythema dyschromicum perstans (EDP) is an uncommon skin condition with peak age of onset being young adults, but it may also be seen in children or adults of any age. EDP is characterized by hyperpigmented macules that are ash-grey in color and may vary in size and shape. While agents such as certain medications, radiographic contrast, pesticides, infection with parasites, and HIV have been implicated in the occurrence of this disease, the cause of this skin disease remains unknown.
Pigmented purpuric dermatosis refers to one of the three major classes of skin conditions characterized by purpuric skin eruptions.
Farmyard pox is a group of closely related parapoxviruses of sheep and cattle that cause similar diseases in humans. Conditions included in this group are:
Relapsing linear acantholytic dermatosis is a cutaneous condition characterized by relapsing linear erosions and crusting, histologically identical to Hailey–Hailey disease. It is not to be confused with transient acantholytic dermatosis.
Focal palmoplantar and gingival keratosis is a rare autosomal dominant disease whose clinical features, and in particular, pathologic alterations and molecular mechanisms remains to be well defined.
Rheumatoid neutrophilic dermatitis is a cutaneous condition associated with rheumatoid arthritis.
Bowel-associated dermatosis–arthritis syndrome (BADAS), also called bowel bypass syndrome and intestinal bypass arthritis–dermatitis syndrome, is a complication of jejunoileal bypass surgery consisting of flu-like symptoms, multiple painful joints (polyarthralgia), muscle aches (myalgia) and skin changes. It has been reported to occur in up to 20% of patients who had jejunoileal bypass surgery, a form of obesity surgery that is rarely performed today.
