Skin infections: types, symptoms and causes

Infectious skin diseases are mainly bacterial in nature, less often pathogens are fungal spores. The most common types of skin infections are erysipelas, folliculitis, panaritium, impetigo and dermatomycosis. These inflammatory processes can occur at any age, regardless of the sex of the person. External signs of infectious diseases of the skin and hair, as well as the causes of their occurrence are described below.

Infectious inflammatory disease of the human skin folliculitis

Bacteria, getting on the skin, can cause infectious diseases of the human skin - this is facilitated by the weakening of the immune system or the presence of various injuries that serve as a gateway to infection.

Folliculitis is an infectious inflammatory disease of the skin, caused most often by a bacterial infection, less often by a fungal infection.

Superficial folliculitis is an easily flowing disease, manifested in the appearance of small pustules around the hair and developing more often on the face, arms or legs.

Symptoms of this skin infection are gradually spreading pustules. At first, a small red spot or a nodule around the hair appears on the skin, from which an abscess is formed, filled with a yellowish-green pus. The abscess opens or dries. Often, it can cover large areas and go to the boil. Especially dangerous is the disease in newborns.

For the treatment of folliculitis, as a rule, it is enough to comply with the rules of personal hygiene and local use of antiseptic drugs.

The cause of this infectious disease of the skin and hair are:

  • non-observance of personal hygiene;
  • skin friction against clothing;
  • skin dissection with itching, after improper application of compresses, with excessive sweating.

The cause of deep folliculitis is a furuncle, as a rule, is the bacterium Staphylococcus aureus( Staphylococcus aureus).Furuncles are usually located on the face, skin of the head, neck, armpits and buttocks. The accumulation of pus leads to the appearance of a painful, warm to the touch follicular pustules against the background of red erythema with a white stem( necrosis) in the center. It is necessary to touch the furuncle with great care, as this is fraught with the risk of spreading the infection.

Warning! Furuncles on the face require immediate medical intervention because of the risk of serious complications( purulent meningitis, sepsis).

The appearance of boils in different stages of development is called furunculosis. If several furuncles develop around the site, around which a purulent necrotic process develops, this is called a carbuncle.

Acute inflammatory infectious disease of the skin of panaritium

Panaritium is an acute infectious disease of the skin of the fingers, less often of the toes caused by Staphylococcus aureus( golden staphylococcus) and expressed in purulent inflammation of the tissues.

As can be seen in the photo: infectious skin disease of panaric attacks can sometimes occur after manicure, when inadvertently wound the nail roller:

Penetration occurs through small wounds, shots, abrasions, scratches, burrs, splinters, which often go unnoticed and are not given duevalues.

The symptom of an infectious disease of the skin of the panaritium is a painful inflammation, localized, as a rule, on the edge of the nail. If pus with this acute inflammatory infectious skin disease appears under the nail, urgent surgical intervention is required to prevent the spread of the infection.

Infectious disease with rash on the skin of the impetigo and its external signs

Impetigo is a bacterial infectious disease with rashes on the skin caused by staphylococci or streptococci. Impetigo is often a secondary infection in eczema.

Impetigo is a very contagious disease that affects mainly children under the age of 10 years.

The disease is characterized by the formation of superficial blister-pustular eruptions. Impetigo usually begins with the appearance of painful red spots, turning through the stage of bubbles into scabs such as honey crusts.

Most often, rashes appear on open parts of the body - the face, legs, brushes, but can be on other skin areas, at the site of damage to the skin.

Eruptions are scattered or crowded in groups, surrounded by a narrow rim of reddened skin. They are quickly opened. After the rupture of the blisters, wet superficial red ulcers appear, later they are covered with honey-colored crusts that fall off after 5-7 days.

erysipelas: what does the infection look like on the skin

erysipelas ( erysipelas - from French rouge - red) is an acute infectious disease, the causative agent of which, as a rule, is streptococcus. Characterized by acute, sudden inflammation.

Most often the person( primary mug) and legs( a recurrent mug) are affected.

In the vast majority of cases, erysipelas are well cured, but tends to recur. The disease can leave after itself pigmentation, peeling, pastosity of the skin, the presence of dry dense crusts. Perhaps the development of such a complication, as lymphostasis, leading to elephant extremities.

What does the erysipelas on the skin look like in 6-12 hours after the onset of the disease? First, the following symptoms manifest themselves:

  • a burning sensation and pain of a bursting nature in the area of ​​inflammation;
  • redness and swelling at the site of inflammation, it is also possible the formation of blisters containing a clear and transparent liquid( they later subside, forming dense brown crusts that fall off after 2-3 weeks);
  • exalted, sharply painful cushion, separating the affected area from healthy skin.

Symptoms of erysipelas in the first day:

  • severe headache;
  • chills;
  • general weakness;
  • possible nausea, vomiting;
  • increase in body temperature to 39-40 ° C.

Erysipelas requires immediate antibiotic therapy.

Infectious disease of the skin dermatomycosis: photos and symptoms

Dermatomycosis - infectious diseases of the skin, hair, nails, scalp caused by parasitic fungi that live in the normal microflora of the skin or enter it from the outside.

Dermatomycoses often begin after various damages of the skin, although sometimes they manifest on apparently healthy skin. This is facilitated by non-compliance with personal hygiene, a weakened immune system, excessive heating and sweating. In rare cases, fungal infections can spread into the underlying tissues, causing generalization of infection with severe course.

Symptoms of this fungal skin infection are as follows:

  • inflammation( redness, blisters);
  • itching, burning;
  • pain;
  • flakes;
  • changing the shape and color of the nails;
  • damage and hair loss.

These parasitic fungi are nourished with keratin, a protein that is present in large quantities in the skin, hair and nails. Dermatophytes can get on the skin from another person, animal, through water or any contaminated objects. Other dermatomycoses, such as onychomycosis( fungal nail infection), can be caused by both trichophyton and multiplication of Candida fungi normally present in the cutaneous microflora.