Spider bite

Very common

A group of symptoms that appear on the skin following the bite of a spider.

Symptoms may include:

• Swelling and pain at the bite site
• Red welt
• Itchy, Red rash...

Gangrene

Very rare

Death of body tissues due to lack of blood flow. This usually affects toes, fingers and limbs. Symptoms include skin discolouration, swelling and pain.

Symptoms may include:

• Pain
• Local discharge
• Swelling...

Bed sore

Common

Ulcers which occur on the skin surface due to prolonged pressure. Lying in bed with out movement (bedridden), sitting on a wheelchair or a cast used for prolonged period may cause sores.

Symptoms may include:

• Reddish skin
• Dark scab
• Chronic wound or swelling...

Necrotizing fasciitis

Extremely rare

A serious bacterial infection that results in the death of the body's soft tissue. This causes blisters, skin discoloration and fever.

Symptoms may include:

• Pain that worsens with time
• Redness and warmth around the wound
• Blisters filled with dark fluid...

Osteonecrosis

Rare

Death of bone tissue due to temporary or permanent loss of blood supply to the bones. Early stages have no symptoms, eventually, it may cause pain in the joints and limit physical activities.

Symptoms may include:

• Pain in hips, buttocks, groin, knee or thigh
• Collapse of space between joints or limping may occur

Frostbite

Very rare

A condition in which the tissue below the skin freezes. It causes cold skin, numbness, burning, blistering, and decreased sensation to touch.

Symptoms may include:

• Cold, numb, and pale skin
• Pins and needles
• Sensation of touch is decreased...