Head Lice – Pediculosis

Written by Medicine and Health. Posted in Arm conditions, Disease, Condition & Injury, Skin arm conditions, Skin conditions, Skin conditions on legs

Head Lice – Definition

Head lice are tiny, barely visible insect-like animals (“arthropods”) that may live on the head and cause itching. (“Lice” is plural; the singular is “louse.”) Head lice may also live in the eyebrows, eyelashes, and beard. But sometimes infestations in these areas are from a related species called pubic lice.

Head Lice – Causes

Head lice spread by personal contact and by sharing combs, brushes, hats, and other personal items.

Gangrene

Written by Medicine and Health. Posted in Arm conditions, Disease, Condition & Injury, Skin arm conditions, Skin conditions, Skin conditions on legs

(Dry Gangrene; Gas Gangrene; Organ or Tissue Death; Wet Gangrene)

Gangrene – Definition

Gangrene is the death of an organ or body tissue. When the blood supply is cut off, the tissue doesn’t get enough oxygen and begins to die. If the gangrene is widespread, shock can occur.

There are three main types:

  • Dry gangrene — lack of blood supply causes the tissue to dry up and slough off
  • Wet gangrene — usually occurs when the tissue is infected with bacteria, tissue becomes moist and breaks down
  • Gas gangrene — a particular type of bacteria ( Clostridia) produces gas bubbles in the tissue

Frostbite

Written by Medicine and Health. Posted in Arm conditions, Disease, Condition & Injury, Skin arm conditions, Skin conditions, Skin conditions on legs

Frostbite – Definition

Frostbite is frozen water in body tissues. Like burns, frostbite injuries can be ranked in severity. First-degree frostbite is the mildest. Fourth-degree frostbite is the most severe. It may result in loss of the affected body part.

The most common parts of the body to become frostbitten include:

  • Fingers
  • Toes
  • Ears
  • Nose
  • Hands
  • Feet
  • Lips
  • Shins
  • Cheeks
  • Corneas
  • Causes

Frostbite happens when skin is exposed to freezing temperatures. This can cause the body tissue to freeze. Ice crystals actually form within the frozen body part. Blood cannot flow adequately through the frozen tissue. This causes the frozen tissue to be deprived of blood and oxygen. The combination of freezing and oxygen deprivation causes tissue damage or tissue death. Rewarming may also ultimately lead to tissue death.

Seborrheic dermatitis – Dandruff

Written by Medicine and Health. Posted in Arm conditions, Disease, Condition & Injury, Skin arm conditions, Skin conditions, Skin conditions on legs

Dandruff – Definition

Seborrheic dermatitis is a chronic skin condition that causes a scaly, itchy rash. It can appear as a mild, white scaling or a yellowish greasy or reddish scaly rash. Most commonly affected areas are along the hairline, in and behind the ears, on the eyebrows, around the nose, and on the chest.

Dandruff is a type of seborrheic dermatitis where there is a scaling of the skin on the scalp. The area can be dry or oily and is sometimes itchy.