Differential diagnosis of tender modules on extremities :
⁃ On calf & ulcerates > Erythema induratum (nodular tuberculid)
⁃ On shin of tibia, never ulcerates > Erythema nodosum
⁃ On upper and lower limb, sometimes face > Erythema nodosum leprosum
Differential diagnosis of tender modules on extremities :
⁃ On calf & ulcerates > Erythema induratum (nodular tuberculid)
⁃ On shin of tibia, never ulcerates > Erythema nodosum
⁃ On upper and lower limb, sometimes face > Erythema nodosum leprosum