### symptom | pain:

Acrylic paint
* are also a colloid
  - available in a variety of formulations
  - emulsions of pigments, water, and clear, nonyellowing acrylic resins
  - good to use because they dry quickly and allow for layering to take place
  - very tough, even tougher than oils
  - vibrant and opaque and work on just about any surface
  - water-based and, therefore, easy to clean up
* attract dirt and dust easily.
* blocks up sanding discs or paper but can be re-coated easily and has a long life.
* can give a much brighter , more vivid colour than oil paints.
* comes in a tube, just like oil paint.
* contain mercury preservatives.
* contains ammonia which smells like cat urine.
* has a flat finish
  - tendency to dry on the tip of the airbrush, resulting in clogging
* is also soluble in the solvent used to remove traditional varnishes
  - thick and very similar to oil painting
  - art supplies
  - the only kind that is practical to use for stenciling
* plastic, and quite expensive.
* produces very clear and vivid colors.
* protect the boat when it is floating in the bathtub harbor or out to sea.
  * can give a much brighter, more vivid colour than oil paints. It has been much used in modern art, and is cheaper than oil paint, which is rather an expensive material. When dry, acrylic paint usually cannot be removed from a solid surface.
* recommended paint for decoration.
* rubs right off skin once it's dry, but it stains cloth forever.
* tends to be less glossy than oil.
* very flexible and weather-resistant paint for exterior use.

### symptom | pain:

Acute pain
* accompanies acute illness or injury, has a specific duration, and is curable.
* can also cause the psychological component of pain
  - occur in response to infection, inflammation or trauma
* common experience.
* has a physiological purpose.
* is associated with a noxious event
  - consistent with sympathetic stress response
  - defined by a recent onset and a natural history characterized by transience
  - generally time limited and is responsive to opioid therapy, among other therapies
  - in most cases self limiting, and usually the result of an injury to the tissue
  - intense, short in duration and generally a reaction to trauma
  - mostly physical in nature, but chronic pain has a significant psychological component
  - of short duration, usually the result of an injury, surgery or illness
* is pain for six weeks or less
  - of a relatively short duration
  - resulting from a recent onset of a new condition
  - rare, but some women do experience it
  - related to the physical sensations caused by an injury
  - secondary to specific tissue damage such as with a sprained ankle or stomach ulcer
  - severe and lasts a relatively short period of time
  - sudden pain that goes away quickly, usually lasting for less than three months
* is temporary, but chronic pain can last a lifetime
  - caused by tissue damage
* is the direct result of an injury or disease
  - result of recent tissue damage
  - usually constant and related to a visible mass
* occurs after surgury and is usually limited and of predictable duration
  - for at most a few weeks, and is more likely to be mechanical in nature
  - when an individual experiences an acute injury
* pig usually is shown by a change in gait or posture.
* signal for alarm.

Alkyd paint
* are the finest of the oil paints
  - superior choice for painting floors and metal surfaces
* forms an impermeable film through constant surface oxidation.
* is more common because it is less expensive and tougher.