6 month old swollen red eye?

Kaitlyn

Shes got what looks like a rash around her eye extending to he top of her head. Her eye is watering so it doesnt seem like

A block duct. She woke up from her nap and i noticed it and its been this way for over an hour. Just gave her tylenol and some zarbees baby mucus medicine because shes snotty. Doesnt seem to irritate her and she doesnt seem usually grumpy. Any ideas?