Milk allergy rash?

Rachel • I'm just a girl living in this big ole world trying to figure shit out💕

Is this baby acne or a milk allergy rash?

My daughter gets extremely irritable after eating, especially at night. I thought this rash looked like baby acne but now I’m not so sure.. help? She’s breastfed but I exclusively pump to feed her.

It’s all over her

face, neck, and chest. (Where milk would run down or touch her)

She also has very loose watery stools.