If you start losing your voice after singing, it could be due to a faulty singing technique. Nasal singing and "throat singing" both push out a lot of air from your throat, causing strain to your vocal cords. Singing for long periods without rest can also strain your voice. In addition, the common cold can lead to upper respiratory infections, possibly resulting in voice loss. Other causes include allergies and gastroesophageal reflux disease.
One of the best first measures to take when you are finding it difficult to sing is to rest your voice. Don't sing for a few days. If the damage is great, you may have to rest your voice from talking for a day or two. Also, get a vocal teacher and practice diaphragmatic breathing, which involves pushing your voice from beneath your diaphragm and the muscles surrounding it. This breathing technique takes away much of the strain from your vocal cords and throat while also increasing your voice's volume.
There are several suggested home remedies for vocal loss after singing. One of the best remedies is drinking water. Drinking eight to ten glasses of lukewarm, room-temperature water a day keeps your larynx hydrated. Don't drink alcohol or smoke during this time and avoid caffeinated drinks. Using a humidifier in your home adds moisture to the air. You can also keep your throat moist by inhaling steam (either from a hot shower or from a bowl of hot water) or by sucking on honey-flavored or fruit-flavored lozenges or cough drops.
If your voice loss becomes a continuous problem or gets worse, contact a doctor. Specifically, get in touch with a otolaryngologist, a type of physician that specializes in ears, throat and nose health. This doctor may be able to diagnose your condition, if there is one. Your primary physician may also refer you to a speech pathologist, who can train you to strengthen the use of your voice.