Alamak mama, itching at the scar site 7 months post-C-section is quite common actually, a few of my mum friends had this too, especially bila kena certain foods or when the scar tissue is still healing underneath. But since it's linked to what you eat and still bothering you after this long, better check with your gynae or GP just to make sure there's no infection or anything else going on, especially if it's getting worse or the area looks red/swollen. In the meantime, keep the area clean and dry, and avoid scratching even though rasa gatal gila!