Vocal cord congestion and hypertrophy may be related to chronic laryngitis, and you can still sing after examination reveals this feature, but vocal effects such as sound quality, tone and volume will be affected, and it may also aggravate the condition, or even cause the development of diseases such as vocal cord nodules and vocal polyps. So singing is not recommended.
Hoarseness is the most important symptom of chronic laryngitis. It is intermittent at first. If the cricoarytenoid joints are involved, the hoarseness is significant in the morning or after a long rest of the vocal cords, but generally the more the voice is used, the heavier the hoarseness is. The more you use your voice, the worse it gets. Then the hoarseness becomes persistent.
For patients with chronic laryngitis, vocal rest is very important. If it is caused by inappropriate vocalization, after the inflammation is controlled, it is necessary to carry out the correct vocal method training.
People with congested and hypertrophied vocal cords may be able to sing again if their condition recovers well after active and standardized treatment, but they need to follow the scientific way of vocalization in order to avoid recurrence of the disease.