There are not many clinical causes of arm fever, but skin infections can cause fever and itching and rashes on the hands. It can also be caused by allergies and other triggers. There are few other causes of arm fever, so if the symptoms are frequent, the patient may choose to go to the hospital for further consultation to clarify the cause and then treat the symptoms. Patients can currently choose to apply cold compresses to the feverish arm and then observe the condition. Trauma to the arm can cause arm fever, and there will be redness, swelling, heat and pain, the use of cold compresses can reduce this symptom, and then observe the condition can be.