Differential diagnosis of ear canal disorders

​Differential diagnosis of ear canal disorders are : 
-ear pruritus 
-seborrheic dermatitis 
-cholesteatoma 
-squamous cell carcinoma 
-exostoses
-osteoma 
-ear pruritius 
-malignant otitis externa / osteomyelitis 
-otitis externa / external otitis 
-cerumen impaction / ear wax