Skin

• calcinosis cutis
  12 March

  WKP
  Definition : Calcinosis cutis is a type of calcinosis wherein calcium deposits form in the skin. A variety of factors can result in this condition. The most common source is dystrophic calcification, which occurs in soft tissue as a response to injury.
  In addition, calcinosis is seen in Limited Cutaneous Systemic Sclerosis, also known as CREST syndrome (the "C" in CREST) or in dermatomyositis.
  See also
  calcinosis cutis
  tissular (...)

• cutaneous inflammation
  16 February

  Localization
  epidermal inflammation
  dermal inflammation
  hypodermal inflammation
  Elementary anomalies
  epidermal inflammation spongiosis exocytosis of inflammatory cells
  dermal inflammation
  hypodermal inflammation
  See also
  cutaneous anomalies

• cutaneous diseases
  16 February

  Types
  cutaneous genetic diseases
  cutaneous malformative diseases
  cutaneous infectious diseases
  cutaneous metabolic diseases
  cutaneous dysimmune diseases
  See also
  skin
  dermatopathology

• dermal infiltration
  11 February

  dermal infiltrates ; dermal infiltrate
  Examples
  perivascular infiltrate
  lichenoid infiltrate
  dermal infiltration by large eosinophilic cells
  Diagnosis of a dermal infiltrate
  See also
  dermal anomalies

• spongiotic, psoriasiform and pustular reaction patterns
  11 February

  Etiology
  acute eczematous dermatitis
  acute generalized exanthematous pustulosis
  allergic contact dermatitis
  irritant contact dermatitis
  lichen simplex chronicus
  pityriasis rosea
  pityriasis rubra pilaris
  prurigoform acanthosis
  psoriasis
  seborrheic dermatitis
  stasis dermatitis
  See also
  cutaneous lesional patterns

• biphasic adnexal tumors
  11 February

  adnexal tumors with biphasic appearance
  Examples
  eccrine spiradenoma
  See also
  adnexal tumors diagnosis of adnexal tumors

• impetigo
  11 February

  bullous impetigo PO
  Synopsis
  pustuleis filled with neutrophils
  cleavage plane is subcorneal or upper granular layer
  variable acantholysis neutrophils may be seen in the spongiotic stratum spinosum
  bacterial clusters are evident with Gram stain
  dermal infiltrate The underlying dermal infiltrate contains a mixed neutrophil and lymphocytes infiltrate
  Differential diagnosis
  allergic contact dermatitis: different clinical history, extensive spongiosis, numerous (...)

• vesiculobullous and acantholytic reaction pattern
  11 February

  vesiculobullous and acantholytic reaction patterns
  |PO|
  Anomalies
  spongiosis: accumulation of extracellular fluid within epidermis with resultant separation of keratinocytes eczematous dermatitis allergic contact dermatitis miliaria
  acantholysis: loss of appropriate keratinocyte cell-cell contact pemphigus transient acantholytic dermatosis Hailey-Hailey Darier disease Grover disease / transient acantholytic dermatosis irritant dermatitis
  reticular degeneration: ballooning (...)

• vesiculobullous pattern
  11 February

  vesiculobullous pattern
  blood blister
  bullous impetigo
  bullous pemphigoid
  cicatricial pemphigoid
  coma blister
  Darier disease
  dermatitis herpetiformis
  epidermolysis bullosa
  epidermolysis bullosa acquisita
  epidermolytic hyperkeratosis
  erythema toxicum neonatorum
  Hailey-Hailey disease
  impetigo contagiosa
  linear IgA disease
  pemphigoid gestationis
  pemphigus
  porphyria
  Stevens-Johnson syndrome
  subcorneal pustular dermatosis
  transient (...)

• Diagnosis of cutaneous diseases
  11 February

  Diagnosis by lesional patterns
  spongiotic pattern , psoriasiform pattern , pustular pattern
  lichenoid pattern , interface pattern
  dermal perivascular pattern , vasculopathic pattern
  dermal non-granulomatous granulocyte-rich pattern
  dermal granulomatous pattern and necrobiotic pattern
  vesiculobullous pattern , acantholytic pattern
  dermal collagen alterations , elastic tissue alterations
  cutaneous deposits
  folliculitis , perifolliculitis , disease of skin (...)

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