A lump in the throat can be due to serious causes like a growth - benign or malignant.
But the commoner cause, especially in someone in your age group is a condition known as Globus pharyngeus. This is a condition in which there is tightening of the throat muscles causing the typical lump sensation.
The most important cause of this condition is acid reflux from the stomach irritating the mucosal lining of the esophagus. Stress is another important cause, causing spasm of the muscles.
Other causes my be a lesion, scars or strictures in the mucosal lining.
In any cause, you do nee to consult a doctor for an examination.
I hope this helps.
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