When one cracks a knuckle, the stretching of the capsule lowers the pressure inside the joint and creates a vacuum which is filled by the gas previously dissolved in the synovial fluid. This creates a âbubbleâ which then bursts producing the characteristic âpoppingâ or âcrackingâ sound.
DOCTORS: Click here for the Professional Version. Burns are injuries to tissue that result from heat, electricity, radiation, or chemicals. Burns cause varying degrees of pain, blisters, swelling, and skin loss. Deep, extensive burns can cause serious complications, such as shock and severe infections. Small, shallow burns may need only to be kept clean and to have an antibiotic cream applied.
The answer is YES, sunburned skin can get swollen. Swelling of the skin, otherwise known as edema, is usually a sign of severe sunburn and is usually caused by inflammation of skin cells as a result of damage by UV rays. Sunburn swelling is one of the main symptoms of severe damage to the skin.