Place where frozen shoulder can be treated

Do you know of any places in Dongdaemun-gu or Dapsimni where frozen shoulder can be treated?

No, do you also need to receive treatment at the hospital for frozen shoulder?

I don't have much knowledge, but lately I've been experiencing pain in one shoulder, and it seems to be frozen shoulder symptoms.

I'm not sure whether I should go to orthopedics for treatment or if it can be resolved just through exercise.

I heard that they usually come in their late 40s when I look it up. Is it correct to say that the causes are aging and lack of exercise?

Please let those with experience share.