Sounds are produced by the vocal cords which are altered and modulated by upper airway and tongue
Voice is an evolutionaly by product of common area for food and breathing
If its just 1 day , take voice rest , drink water
See if it resolves in 1-2 days if not show a doctor preferably ENT
If not resoiving after a course of medicines, show ENT do Endoscopy
Endoscopy is done to see the vocal cords and its movement
Endoscopy to see vocal cords can be done looking through mouth holding tongue
or using flexible scope looking through nose upto vocal cords
Assuming voice change and cold are same cold medicines are given which delay the improvemnet
Use of steriods give immediate relief but damage the vocal cords
Progeressive voice change could points towards cancer
Sudden voice change especially vocal cord palsy could be due cancer of
Thyroid, food pipe, lung, lymph node
Vocal nodule: singers/teachers nodule due to excessive voice use treated by voice therapy
Vocal cord polyp- non cancerous- needs surgery
Laryngeal papilloma- viral infection - needs removal
Vocal cord cyst- can be removed
Sucus vocalis- can be improved with surgery
Muscle tension dysphonia- voice therapy