Pleurodynia, devil's grip
Seen in children or young adults, this is a viral infection caused chest muscle pain that is worse with deep breathing. The pain is severe and sharp, stabbing at worst.
Over-the-counter pain medication can help.
Chest pain from sickle cell crisis
Seeing in children with acute sickle cell vaso-occlusive crisis. Lung infarction with/without pneumonia (infection). Transfusion is the treatment of choice.