It might also protect the area from sunlight, which stimulates the production of pigment and causes discoloration.

Medications can cause red discoloration of the urine, but not hematuria.

This causes severe discoloration and eventual defoliation of the plant.

When taken for long periods, minocycline can cause discoloration of the skin.

Dissolved and particulate material in water can cause discoloration.

Slow oxidation may occur upon prolonged exposure to air, usually causing blue discoloration.

Starching the uniform has been shown to cause discoloration.

Like white lead, it is injured if exposed to acids or impure air, which cause discoloration and decay.

Although not a health hazard, it causes drying, discoloration and loss of flavor.

One shot hit Kahn squarely in the eye, causing enough swelling and discoloration to keep him from playing.