After a hit, the look of an arm, leg, hand or joint on the day of the injury often tells you less than the look two or three days later. Swelling and bruising change shape, spread, fade and move. A written record of those changes gives whoever examines you a timeline instead of a single snapshot. This entry is educational only. It is not a diagnosis, and only an in-person examination can tell you what is going on.
Why the first day is only a snapshot
Swelling can build over several hours, and bruising often takes time to reach the surface of the skin. A look taken the evening of the hit may not match what you see the next morning. That is normal, which is why the first entry matters less than the pattern across entries. Write down what you see even when it looks unremarkable, because a plain entry still shows a starting point.
What to write in each entry
Use the same few fields every day so the entries can be compared side by side. Start each one with the full date and the time. Then describe the location from a fixed landmark, such as two finger-widths above the kneecap or the bony bump on the outside of the ankle, instead of a vague phrase like the knee. Next, note the size. If you have a ruler, measure in centimeters. If not, compare the area to the same spot on the uninjured side and say whether it looks larger, smaller or about the same.
Describe the color in the shades you actually see, such as red, purple, blue, yellow, green or brown. Note whether the edges look sharp or blurred. Describe firmness in your own words, for example tight, soft, lumpy or warm to the touch compared with the other side. Finally, record whether the color or swelling has moved since the last entry and, if so, which direction it has traveled.
Keep guesses out of the log. An entry that reads dark area below the outer ankle, a little larger than yesterday is useful. An entry that reads probably a sprain locks in a guess that may be wrong and can steer later notes. Write what you observed, and leave the explanation for the clinician.
Photos that help instead of confusing
Photos can support the written entries if you take them the same way each time. Stand in the same light, shoot from the same distance and keep the background consistent. Include a ruler or a coin beside the area for scale if you have one. Note the time in your log next to each photo so the image and the written entry match. Skip filters, cropping and heavy editing, since those change what the picture shows.
Changes that call for faster attention
Some changes are worth bringing to a clinician sooner than a routine visit. Examples include an area that turns pale, blue, cold or numb, swelling that grows quickly from one entry to the next, or pain that becomes severe. If you notice any of these, do not wait to finish your log before getting care. Seek urgent help now, and bring your notes along if you can.
Bringing the log to a visit
Bring the handwritten or printed log, the dated photos, and a short note on what has changed since the last entry. Read the most recent entry aloud before you describe anything from memory. Clinicians can then see the sequence of changes, not only how the area looks on the day you walked in. If the area has already faded or shrunk by the time of your visit, the record still shows the path it took.
Keep the record going until it settles
Continue entries until the area returns to the way it usually looks, and write down the date you stopped. Entries showing fading, shrinking or spreading are as useful as the ones showing worsening, because the direction of change is the information a clinician needs most. A log that runs from the first hours through the final fade gives you a complete record to refer back to, and it keeps the history from depending on memory alone.