1. Vocal Fry: Vocal fry, also referred to as vocal fry register, is a vocal technique in which the vocal folds vibrate at a slow rate resulting in a creaking or rattling sound. This can cause ticklish or scratchy sensations in the throat when singing low notes.
2. Muscle Tension: Tightness or excessive tension in the throat, neck, and jaw muscles can lead to tickling sensations. It is common for inexperienced singers to experience this when they attempt notes that exceed their vocal range or that require more vocal power than they are accustomed to.
3. Vocal Nodules or Polyps: Vocal nodules and polyps are noncancerous growths on the vocal folds that can cause irritation and tickling sensations in the throat. They may affect vocal quality, including the production of certain notes.
4. Sinusitis or Allergies: Sinus congestion, allergies, or postnasal drip can lead to postnasal drip and throat irritation, which may result in a tickling feeling in the throat.
5. Reflux: Gastroesophageal reflux disease (GERD) can cause stomach acids to back up into the esophagus and throat, leading to a tickle or irritation. This is often accompanied by other symptoms like heartburn, sour taste, or chronic cough.
6. Dry Throat: Inadequate hydration can lead to throat dryness, which can contribute to a ticklish feeling, especially when attempting to sing high or sustained notes.
If the tickling sensation persists or is accompanied by pain, hoarseness, or difficulty swallowing, it is advisable to consult a medical professional, preferably an otolaryngologist (ear, nose, and throat specialist) to rule out any underlying medical conditions.