Certain tendon or muscle injuries can cause noticeable changes in appearance.

For example, a significant tendon injury may sometimes produce a change in the normal contour of a muscle.

That doesn't mean every unusual-looking arm indicates a serious injury. Natural anatomy, muscle definition, age-related skin changes, and lighting can all affect appearance.

But a new physical change that appears immediately after an injury deserves attention.

The Strange Appearance of the Skin in the Image

The lower portion of the image shows extremely wrinkled skin on the fingers.

Skin can temporarily become wrinkled for many harmless reasons.

One familiar example is what happens after spending a long time in water. The fingertips can develop pronounced wrinkles, sometimes called “pruney fingers.”

This response is normal and usually disappears after the skin dries.

Age can also dramatically affect the appearance of skin. Older skin tends to become thinner and less elastic, making wrinkles and folds more visible.

Therefore, the appearance of wrinkled fingers in an image should not automatically be interpreted as evidence of a disease or injury.

A photograph alone cannot establish the cause.

When Arm Pain Needs Urgent Attention

Most minor muscle aches aren't emergencies.

However, sudden arm pain can occasionally be associated with more serious conditions, particularly when other symptoms are present.

Seek urgent medical attention if sudden arm pain occurs together with symptoms such as:

• Chest pressure or pain
• Shortness of breath
• Fainting or severe dizziness
• Sudden sweating or nausea
• New weakness or numbness
• Difficulty speaking
• Sudden facial drooping
• Severe swelling
• A visibly deformed joint or limb
• Loss of normal movement
• A hand or arm becoming unusually pale, blue, or cold

These symptoms can indicate conditions that require prompt evaluation.

In particular, unexplained arm pain accompanied by chest discomfort or breathing difficulty should never simply be assumed to be a muscle strain.

What to Do Immediately After a Minor Injury

If a person experiences sudden but relatively mild arm pain during stretching and there are no concerning symptoms, the first step is simple:

Stop stretching.

Give the area a chance to settle down.

Avoid repeatedly testing the painful movement. If swelling develops, appropriate cold therapy may sometimes help with comfort during the early period after an injury, although a healthcare professional can provide more specific advice depending on the injury.

Once the acute pain settles, gradual movement may be appropriate.

The key word is gradual.

Returning immediately to heavy lifting or aggressive stretching can make recovery more difficult if tissue has actually been injured.