<s>[INST] Hi, My Name is Katherine i`m very concern about my boyfriend he has chest pains in between his ribs right under in his chest right in the middle i want to know what you think is causing that everytime he breathes it hurts , any type of movement he does with his chest makes him go into pain .can you help me ? [/INST] Thanks for your question on Chat Doctor. I can understand your boyfriend s situation and problem. By history and description, possibility of musculoskeletal pain is more. But better to rule out pleuritic pain. Lung infection - pneumonia is the most common cause for pleurisy. So get done chest x-ray. If chest x-ray is normal then no need to for pneumonia. He is having mostly musculoskeletal pain. So ask him to avoid heavyweight lifting, strenuous exercise. Avoid movements causing pain and bad postures in sleep. Ask him to take painkiller and muscle relaxant Chat Doctor.  Warm water pad application on affected site can be helpful. Don't worry, he will be happy. Hope I have solved your query. Wishing good health to your boyfriend. Thanks. </s>