Pain Location Tracker

One of the most challenging aspects of pain to document and communicate is the location of pain. This is particularly true for people with conditions that cause pain to appear in multiple locations throughout their body. But knowing where a person is hurting is also one of the most important diagnostic tools for a doctor, so the need to accurately depict a pain location profile is a key feature of a pain tracking application.

In Chronic Pain Tracker, we use the Pain Painter to give the user the ability to draw on a model the areas and intensities of their pain. The Pain Painter offers 4 different models to choose from, and each model offers the ability to show different physiological views that can be overlaid with the pain mapping image. This provides an excellent view of where a person is hurting at any given point in time.

Even more powerful is the ability to summarize the pain location data into a synthesized pain mapping that shows the most prominent pain locations for a given range of time. Chronic Pain Tracker takes each unique pain map and composites them to create a new view which shows where the majority of the pain is located. Again, for someone with pain that often moves around the body, this tool can help visualize which areas are being hit most frequently – something that is very difficult to objectively quantify without a tool like Chronic Pain Tracker.

Diary Entry Input

The basic Tracker Entry Cell View for Pain Location will show the front/back images of the default model. This model initially is blank (i.e. no pain mapping applied), although it is possible to have this Tracker automatically copy the pain map from the previous entry as a starting point for the next entry.

The slider below the images allows you to switch between the 4 different overlays available for the models: Skin, Muscular, Skeletal, and Dermatome Mapping.

Tapping on either of the body models will open the Pain Painter Editing View.

Within the Pain Painter you apply the “paint” to the model. You have the option of four different colors to indicate levels of pain intensity (purple, red, orange, yellow – in decreasing order of intensity).

You can also choose between the four different body models: Generic, Male, Female, Migraine. Each model includes multiple overlays that you can select from.

Using the standard iOS pinch and drag motions, you can zoom and pan the model image as needed to ensure an accurate placement of the “paint”. You can vary the size of the paint brush using the slider just below the color selection.

Switching between front and back sides is done by tapping on the front/back body images in the tool box area.

Summary Report Graph Samples

Composited Pain Map

The composited pain map is created by taking the pain maps from the Diary Entries in the reporting range and systematically blending those maps together to form a single image which reflects the primary areas of pain for the period. During the blending process, the various colors (pain intensities) are weighted to ensure that areas of more intense pain have a greater influence on the final composited pain map.

As in the individual pain maps, you can also view the composited pain map using one of the four different physiological overlays in order to help your doctor identify root causes of the pain.