Impetigo herpetiformis
Intrahepatic cholestasis of pregnancy (cholestasis of pregnancy, jaundice of pregnancy, obstetric cholestasis, prurigo gravidarum)
Linea nigra
Pemphigoid gestationis (gestational pemphigoid, herpes gestationis)
Prurigo gestationis (Besnier prurigo, early-onset prurigo of pregnancy, linear IgM dermatosis of pregnancy, papular dermatitis of pregnancy, prurigo of pregnancy, Spanglers papular dermatitis of pregnancy)
Pruritic folliculitis of pregnancy
Pruritic urticarial papules and plaques of pregnancy (late-onset prurigo of pregnancy, polymorphic eruption of pregnancy, PUPPP syndrome, toxemic rash of pregnancy, toxic erythema of pregnancy)
Striae gravidarum

Pruritic
Pruritus, commonly known as itchiness, is a sensation exclusive to the skin, and characteristic of many skin conditions. Adult blaschkitis
Aquadynia
Aquagenic pruritus
Biliary pruritus
Cholestatic pruritus
Drug-induced pruritus
Hydroxyethyl starch-induced pruritus
Lichen simplex chronicus (neurodermatitis) 
Prion pruritus
Prurigo nodularis
Prurigo pigmentosa
Prurigo simplex
Pruritus ani
Pruritus scroti
Pruritus vulvae
Puncta pruritica (itchy points)
Scalp pruritus
Senile pruritus
Uremic pruritus (renal pruritus)

Psoriasis
Psoriasis is a common, chronic, and recurrent inflammatory disease of the skin characterized by circumscribed, erythematous, dry, scaling plaques. Annular pustular psoriasis
Drug-induced psoriasis
Exanthematic pustular psoriasis
Generalized pustular psoriasis (pustular psoriasis of von Zumbusch)
Guttate psoriasis (eruptive psoriasis)
Inverse psoriasis
Keratoderma blennorrhagica (keratoderma blennorrhagicum)
Localized pustular psoriasis
Napkin psoriasis
Psoriasis vulgaris (chronic stationary psoriasis, plaque-like psoriasis)
Psoriatic arthritis
Psoriatic erythroderma (erythrodermic psoriasis)
Seborrheic-like psoriasis (sebopsoriasis, seborrhiasis)

Reactive neutrophilic
Reactive neutrophilic cutaneous conditions constitute a spectrum of disease mediated by neutrophils, and typically associated with underlying diseases, such as inflammatory bowel disease and hematologic malignancy.
Epidermolysis bullosa acquisita, also known as acquired epidermolysis bullosa, is a longterm autoimmune blistering skin disease. It generally presents with fragile skin that blisters and becomes red with or without trauma. Marked scarring is left with thin skin, milia and nail changes. It typically begins around age 50-years.It is caused by antibodies to type VII collagen within anchoring fibril structures located at the dermoepidermal junction in skin. Damaged skin may become infected.Diagnosis is by observing the persistence of the condition, direct immunofluorescence, and detecting autoantibodies against type VII collagen. It can appear similar to porphyria cutanea tarda, pemphigoid, pemphigus, dermatitis herpetiformis, or blistering drug eruption. The condition is longterm and has no cure. A good response may be seen with corticosteroids, either alone or combined with azathioprine or dapsone.It is rare, with around 0.08 to 0.5 new cases per million people per year, and it affects males and females equally. Signs and symptoms
It generally presents with fragile skin that blisters and becomes red with or without trauma. Marked scarring is left with thin skin, milia and nail changes. It typically begins around age 50-years. Cause
It is caused by antibodies to type VII collagen within anchoring fibril structures located at the dermoepidermal junction in skin. Diagnosis
Diagnosis is by observing the persistence of the condition, direct immunofluorescence, and detecting autoantibodies against type VII collagen. It can appear similar to porphyria cutanea tarda, pemphigoid, pemphigus, dermatitis herpetiformis, or blistering drug eruption. Treatment
The condition is longterm and has no cure.