Common Bacterial Infections of the Skin

Our skin is host to a number of bacteria, most of which are beneficial. Including the friendly flora in our gut, more than 200 species of bacteria reside within the tissues exposed to the external environment. Skin infections result from these bacteria when the integrity of the skin breaks down or when the immune defense system is weak.

Skin infections can occur on the skin surface or deeper within the skin tissue. The most common bacteria that infect the skin are Staphylococcus aureus and Streptococcus pyogenes. Read more about bacterial infections on www.skincareguide.ca/conditions/bacterial_infections

TYPES OF BACTERIAL INFECTIONS:

Impetigo and Ecthyma

Impetigo begins with a redness of the skin and progresses to blisters that fill with fluid and itch, and then produce honey-colored crusts. Lesions usually form around the nose and face. Ecthyma is a deeper version of impetigo that usually forms on the legs. It causes large boils, crusts, and deep sores that leave scars.

Folliculitis

Folliculitis is an infection of the hair follicles. It produces pimplelike skin bumps and small blisters with pus. Folliculitis occurs on the face, upper trunk, arms, and buttocks. When the infection goes deeper, feels tender, and produces more pus, it is furunculosis. Carbuncles are furuncles that have fused.

Abscess

An abscess is a deep infection that appears like a closed blister or an open hole with pus. It is usually tender and becomes sore and painful as the infection progresses.

Erysipelas and Cellulitis

Erysipelas is a superficial infection that tends to occur in young children and the elderly. It is also seen in those who have chronic swelling of the limbs, are addicted to alcohol, have diabetes mellitus, or have experienced trauma. Erysipelas mostly occurs on the face or legs. A fever occurs abruptly, the cheeks become red, and the skin feels hot, tense, and swollen. Cellulitis is a deeper form of this infection.

TREATMENTS:

Bacterial skin infections are treated according to their severity. Your physician may incise and drain deeper infections and abscesses, and recommend that you apply warm compresses. Creams such as Fucidin® or Bactroban® are prescribed for mild stages of:

* impetigo
* ecthyma
* folliculitis
* abscess

If the infection is more extensive, oral antibiotics such as Cloxacillin or Cephalexin are used as well as those in the erythromycin family. Penicillin is often used to treat for strep.

Antibiotic resistance is an increasing problem so it is best to have early adequate proper treatment to minimize risk of exposure to antibiotics and lower the risk of transmission to others.

During treatment, remember to wash your hands daily with an antibacterial solution such as Trisan®, Tersaseptic® or Hibitane®, or use a product like Safe4Hours® (www.invisicare.com) which kills bacteria for four hours. Hand washing is the most important thing you can do to minimize the spread of infection.

If you suspect a bacterial skin infection, see your doctor before it becomes severe. Due to the increase of bacterial resistance to drugs in general, it is important to take the full course of your prescribed medicines.

Skin Infections and Blisters

Care of blisters : Home treatment may help decrease pain, prevent infection, and help the skin heal.

Small, unbroken blisters less than 1 in. across] usually heal on their own.

• Do not try to break the blisters. Just leave them alone.
• Do not cover the blisters unless something such as clothing is rubbing against them. If you do cover them, apply a loose bandage. Secure the bandage so the tape does not touch the blisters. Do not wrap tape completely around a hand, arm, foot, or leg, because it could cut off the blood supply if the limb swells. If the tape is too tight, you may develop symptoms below the level of the tape, such as numbness, tingling, pain, or cool and pale or swollen skin.
• Avoid wearing clothes or shoes or doing activities that rub or irritate the blisters until they have healed.

Large or broken blisters usually heal without problems. Most large blisters will break on their own and then heal.

• Wash your hands with soap and water before touching blisters. Blisters can easily become infected.
• If you have a large blister, you may want to drain it, depending on where it is. If you decide to drain it:
  • Clean a needle with rubbing alcohol or soap and water, then use it to gently puncture the edge of the blister.
  • Press the fluid in the blister toward the hole you made.
  • Wash the blister after you have drained it, and pat it dry with clean gauze.
• Do not remove the flap of skin covering the blister unless it tears or gets dirty or pus forms under it. If the blister has just a small puncture or break, leave the flap of skin on, and gently smooth it flat over the tender skin underneath.
• Apply an antibiotic ointment, such as polymixin B or bacitracin, if you are not allergic to it. The ointment will prevent the bandage from sticking to the blister and may help prevent infection. Do not use alcohol or iodine on the blister, because these may delay healing. Do not use an ointment if you know you are allergic to it.
• Loosely apply a bandage or gauze. Secure the bandage so the tape does not touch the blister. Do not wrap tape completely around a hand, arm, foot, or leg, because it could cut off the blood supply if the limb swells. If the tape is too tight, you may develop numbness, tingling, pain, or cool and pale or swollen skin below the level of the tape.
• If the skin under the bandage begins to itch or develops a rash, stop using the antibiotic ointment.
• Change the bandage every day and anytime it gets wet or dirty. You can soak the bandage in cool water just before removing it to make it less painful to take off.
• Avoid wearing clothes or shoes or doing activities that rub or irritate the blisters until they have healed.

Watch for a skin infection while your blister is healing. Signs of infection include:

• Increased pain, swelling, redness, or warmth around the blister.
• Red streaks extending away from the blister.
• Drainage of pus from the blister.
• Swollen lymph nodes in your neck, armpit, or groin.
• Fever.