What's the difference between i.e. and e.g.?
erythema induratum erythema in·du·ra·tum (ĭn'də-rā'təm, -dyə-)
A chronic disorder characterized by recurrent hard subcutaneous nodules that frequently form necrotic ulcers, usually on the calves and less frequently on the thighs or arms of women. Also called Bazin's disease, tuberculosis cutis indurativa.