<s>[INST] I did the salt and ice challenge using 4 pieces of ice and I don t know what to do . i know it was stupid. I did it on Sunday and I cant put my arm straight down without my hand getting swollen and on Sunday i felt dizziness, and weakness. I can ttouch or move it and it still feels numb. what should i do? [/INST] Here your main question is treatment for swollen and painful arm. Apart from this your explanation is not clear.For swollen and painful arm there could be multiple possibilities. It can be due to nerve injury at affected side or muscle injury or may be over use injury. It may also be related with cervical spine or shoulder problem.Here i need some more clarification on how it was started? As well is this first time you are having this pain along with swelling?So many things are not clear so I suggest visit orthopedic and doctor will do some physical tests he may ask you to go for scaning or x-ray also for some more detail examination. And as per the report if there is nothing major then ortho doctor will suggest for medication and physiotherapy treatment which will definitely help you. But if there is major damage at cervical spine or shoulder or for nerve or muscle then doctor will suggest for surgical correction and later again physiotherapy rehabilitation. At home you can also use cold pack and if it is minor pain and swelling can go away with this too.Follow all above steps and I am sure it will be useful for you.Take care. </s>