Dermatology - diseases of the skin

Spots on the skin (rashes in patches)

Spot is the area of the skin changed color, not protruding above the skin. Spot color may be different, if a lot of melanin (a skin pigment), the color is brown, black, bluish, if very little melanin, the opposite light if inflammatory changes, then red.

Causes of spots and rashes on the skin:

Causes of spots and rashes on the skinSpot on skin brown when:

  • becker nevus
  • eritrazma (a bacterial infection that affects the interdigital spaces of the feet, groin folds, underarms)
  • persistent drug rash( reaction to some drugs)
  • freckles
  • border naevus (flat and slightly raised spots. If you are on the palms, genitals and the mucous membrane, are dangerous(frontier), because you can go in melanoma)
  • lentigo (benign spots that occur on exposed skin)
  • malignant lentigo (a form of melanoma)
  • melasma (chloasma) (spots on your face and neck, in genetically predisposed women, occurs during the 2 and 3 trimesters of pregnancy and in some women taking inside contraceptives; rare occurs in men)
  • photoallergic rash(caused by excess sun exposure, or certain medications can cause increased sensitivity to the sun)
  • congestive dermatitis(often affects the legs, accompanied by swelling, varicose and dilated veins)
  • black ringworm of the palms(pathogen-mildew)

Spot on skin blue, when:

  • ink (tattoo)
  • sky-blue spots (lice)
  • Mongolian spot

Spot on skin red when:

  • drug rash(allergic reaction to medication)
  • juvenile rheumatoid arthritis(inflammation of joints)
  • rheumatic fever
  • secondary syphilis
  • viral exanthema (rash resulting from viral infection)

Hypopigmentation spot on skin when:

  • anemic nevus (colorless)
  • inflammatory psoriasis(after the resolution of psoriatic plaques remain the bright spot)
  • tinea (colored) versicolor (a fungal disease)
  • tuberous sclerosis (a rare genetic disease with the defeat of the internal organs, including the Central nervous system)
  • vitiligo(a disease of unknown origin, in which melanocytes are destroyed)
  • radiation dermatitis

What doctor to see when spots on skin:

  • dermatologist
  • allergist (for allergic diseases)
  • the surgeon (septic processes, such as the carbuncle, furuncle, etc., especially when multiple items or large)
  • infectious disease (infectious diseases)
  • neurologist (with herpes zoster because of the involved nerve system)
  • oncologist (cancer)

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