It is a condition I’ve encountered from time to time for around 20 years. Years ago an Ear, Nose, and Throat (ENT) MD prescribed the following cleaner:
Start with a fresh16 oz. container of Rubbing Alcohol
Discard 3 Tablespoons of the 16 oz.
Add 3 Tablespoons of white vinegar. These interact and do not need to be shaken or mixed (I am told). The resulting solution (a later MD told me) is a very mild antibiotic – or anti-something.
At any rate, when I get itchy ears, I swab them out with Q-tips dipped in the above solution and then with another Q-tip, applyan anti-itch cream. Relief is almost instantaneous.
The original ENT MD prescribed application of an anti-itch cream – in my case a prescription of Triamcinolone CreamUSP, 0.1%. To be applied as needed, VERY SPARINGLY, overnight, when the HAs are in their nice warm bed. There are OTC anti-itch creams but I’ve never tried them. The small tube has literally lasted me 4 years.
After eliminating the original itch, I now get an occasional itch, and have to do the above maybe once or twice a month - usually never more than one night, but occasionally two nights in a row. Sometimes I go for weeks without an itch.
Hope this helps.