### symptom | pain | hemorrhoid:

External hemorrhoid
* appear as very tender, sometimes itchy, bluish swellings at the anus.
* are always outside by definition
  - below the pectinate line and drain into the inferior rectal veins
  - contiguous with perianal skin
  - small swellings that are easy to see and quite painful
  - superficial varicose veins located just outside the opening of the anus
* develop under the skin just outside the opening of the anus.
* drain into the inferior rectal vein, which drains into the inferior vena cava.
* form in the mucus membrane lining just beyond the rectal canal at the anus.
* involve the veins outside the anus.
* lie within the anus and are usually painful.
* occur in the veins underlying the skin outside the anus
  - just outside the anus and are covered with skin
  - under the skin around the anal opening and are usually very painful

Internal hemorrhoid
* are generally painless, but often bleed.
* are painless and sometimes cause a lot of bleeding
  - but they sometimes cause a lot of bleeding
  - usually painless
* lie above the pectinate line and drain into the superior rectal vein.
* occur inside the anal canal where there is an absence of pain sensitivity
  - underneath the mucous membrane lining the rectum

Intense pain
* Some intense pain is caused by muscles.
* is the result of the depletion of tissue calcium.

Intestinal colic
* is pain
* occurs as cramping abdominal pain interspersed with pain-free intervals.

### symptom | pain:

Joint pain
* are also very common among the elderly.
* associated with the flu also stops when heat begins.
* can be severe with permanent destruction of bone and cartilage of the joints
  - occur with or without movement and can be severe enough to limit movement
  - result from irritated nerves from the neck
* develops at any stage of the disease and lasts from a few hours to several weeks.
* is associated with increased stress on joints, often produced by repetitive motions
  - common in infected adults, especially women
  - endured by almost everyone living today's active lifestyle
* is the most common complaint in patients who suffer from osteoarthritis
  - of people with hemochromatosis
  - treated with analgesics, anti-inflammatory agents, and physical therapy
  - very common in lupus

Knee pain
* can also come on gradually from overuse of the joint.
* is accompanied by fever
  - caused by many of the same factors

### symptom | pain:

Latex paint
* Let paint harden in can.
* Most latex paints do contain some solvents, but much less than oil-based paints do.
* are also mildew resistant
  - durable, easy to apply, and retain their color well
  - safer than oil-based paint because they are free of flammable and toxic solvents
  - water-thinned
* can have film formation interrupted before it has totally formed.
* has less hazardous ingredients.
* is highly flammable
  - less toxic, yet it can still cause damage
  - non-hazardous
  - recycled as a curing powder for cement based products
  - the paint of choice for wall and ceiling surfaces
  - used because it allows gas exchange
* part of coating and sealing technology.
* suspension of finely divided synthetic resins in water.