Type 1 sulcus vocalis is often associated with acid reflux a.k.a. Laryngo-pharyngeal Reflux Disease. Maintaining adequate hydration, practicing good vocalisation habits, breathing exercises and medications for acidity (like Pantoprazole or Esomeprazole or Rabeprazole) should be enough along with a few sessions of speech therapy. Some life style changes like early dinner, Night walks post dinner, cutting down oily foods and beverages like tea/coffee in the evening can also help with acid reflux.

Speech therapy is the treatment for sulcus vocalis. You can add antacid and antihistamine.. Avoid spicy and oily food. Avoid smoking and alcohol

Hello. Hope you are doing well. The image isn’t clear to identify sulcus I am afraid. Although speech therapy is the first step towards treatment

Yes , speech therapy is the gold standard treatment . Additionally some antacids u can add on . Avoid smoking and alcohol if using. Avoid vocal abuse ( shouting, screaming)

Hey cant make out sulcus vocalis from the laryngoscopy picture . However yes , voice therapy is sufficient for type 1

Looks normal