Can rosacea give you dry flaky skin behind the ears?

Generally no. Falky skin behind ears probably psoriasis.
A few possibilities. Rosacea is less likely however there are a few other possibilities such as seborrheic dermatitis. It may be worthwhile to see your provider for definitive diagnosis and treatment.

Related Questions

Is dry flaky skin behind ear a sign of rosacea?

Seborrheic dermatiti. Dry flaky skin behind the ears is more likely due to seborrheic dermatitis, a condition that is cause by excessive colonization of a common yeast called pityrosporum ovale (or malassesia furfur). Treatment typically involves reduced colonization, such as the use of head and shoulder, Nizoral (ketoconazole) or selsun blue shampoos. Lather and leave in for 5min then wash off. Read more...