Application of ice packs intermittently can help. You didnt say what site of injection and for what condition. If a rash develops, allergic type reaction or increased pain contact the MD.
Trigger point inj are usually a cortisone drug and lidocaine mixed together. You also failed tp mention if the injection site is what hurts or a larger area of skin around injection is effected. Its hard to advise you without more specific information.
Hi
Welcome to the MedHelp forum!
It could be just drug induced fever type. Take something like acetaminophen, drink plenty of fluids and take a multivitamin. If the symptoms do not subside or you feel worse, immediately consult a doctor. Take care!
Just doing a google search for "trigger point injections side effects" it comes up that low grade fevers 1 - 3 days after the injections can happen.
Fevers make skin hurt - do you have a thermometer?
Best wishes.