Your father sounds like “a champ”, as you say. The sores on his face, scalp and neck sound uncomfortable. A dermatology referral may be helpful.
I have very red, inflamed skin reactions after every infusion so I was referred to a dermatologist after the first infusion in 2020. The dermatologist prescribed a topical lotion that wasn’t very helpful so I am grateful for masks. Some days, I want a mask the size of a diaper!😆 However, many patients have good results with dermatologists’ recommendations.
Fragrance-free Dove bar soap for sensitive skin, even on my head, relieves the discomfort considerably.
I hope your father has relief from this soon. I am glad he has you to help him. Wishing him a good outcome with his treatments!
You don’t mention what medication your dad is on, or whether the doctors have linked the sores on his scalp and face to his meds. The antibiotics they give him, are they oral or topical?
If it’s your dad’s oncologist who is issuing the antibiotics, maybe get him to his GP. That might score the referral to the dermatologist that S2020 mentioned. You might also check with the pharmacist about the antibiotic he has already been prescribed. They won’t be able to give you something else, but they might have an alternative you could ask the doctor about.
Your dad is lucky to have you looking out for him, and we’ll support you the best we can.