Can premature ejaculation be cured and not relapse?

Patient's question:

Detailed medical condition and consultation purpose: Treatment methods
Duration of the current illness and persistence: 10 years
Current general condition: Not severe
Medical history: 10 years
Previous diagnoses and treatment history and outcomes: None
Auxiliary tests: None
Other: None

Doctor's answer:

Hello: Western Medicine Treatment:
　　A. Oral Medication: To reduce excitability, small doses of anti-anxiety or sedative drugs can be administered. Choose one of the following:
　　Trimethobenzamide 0.1–0.3 grams, three times daily.
　　Phenobarbital 0.03 grams, three times daily.
　　Oryzanol 10 milligrams, three times daily.
　　Propantheline 30 milligrams + Librium 20 milligrams, once nightly.
　　Methydopa 25 milligrams, taken one hour before intercourse to inhibit ejaculation.
　　B. Topical Medication: 0.5–1 hour before intercourse, wash the glans penis and apply a small amount of anesthetic cream, such as 1% Dyclonine ointment, or 1% procaine or 2% cocaine. Note that only a small amount should be applied to the tip of the glans; excessive application may reduce the ejaculation reflex, even leading to anejaculation, and may also affect erectile function, causing weak erections.