Hi,
The commonest causes of burst ear drum is development of fluid or pus in middle ear, increasing the pressure that ruptures the ear drum. This is usually due to transmission of infection from
nasopharynx through Eustachian tube and can be bacterial or viral.
Erythromycin is a drug of choice and continue.
You also have to insist for anti-inflammatory medicine like
Ibuprofen, decongestant with antihistamine properties.
Nasal decongestant nasal drops.
Suitable and needed ear drops as per the real findings.
Take rest.
Do not blow nose.
Avoid extreme temperature differences.
Drink plenty of warm fluids and have normal diet.
Usually these measures will heal the ear drum and surgery is rarely necessary.
Take care. Hope I have answered your question. Let me know if I can assist you further.
Regards,
Dr. T. Chandrakant, ENT & General Surgeon