Radiation can also cause damage to normal tissue.

This causes less damage to nearby healthy tissue.

Photodynamic therapy causes little damage to healthy tissue.

Regular exercise causes microscopic trauma to tissue, which generally heals during the hours or days of rest in between.

This causes damage to tissue and bone.

This allows a high dose of radiation to reach the tumor and causes less damage to normal tissue around the tumor.

This increases the effect of the drug and causes less damage to healthy tissue.

The infection can spread unimpeded and cause serious injury to important tissue.

This type of radiation therapy causes less damage to healthy tissue near the tumor.

Laser resurfacing is usually very precise and causes little damage to the surrounding skin and tissue.