Welcome back to icliniq.com.
I appreciate the frankness with which you communicate and provide details about your problem. With the details you gave I understand that you developed this neck issue after you attended some class. Also, you did not suffer from any of the associated symptoms that I asked you.
Your problem is because of a wrong or difficult posture which you may have maintained during your class hours. Probably, when you look down into the writing material on the desk while seated on the bench and maintained the same posture for a long time. This could have sprained some muscle that is causing the trouble.
However, the way you describe it does not appear like pain also. You have used the term irritation. It does not appear that you suffer from any ear, nose or throat issue. However, small chances that you may be having the globus feeling. But this will make you feel something stuck in the throat which is constantly creating a feeling of foreign body inside the throat or food passage.
Since you have started on the Amoxiclav course continue the same for five days. Morning one tablet and evening one tablet, spread over 12 hours and take the tablet after food. Chymotrypsin tablet should be taken half an hour before food. Complete five days of antibiotic and three days of chymotrypsin.
Try some hot fomentation of the neck in the affected part. Do not move your neck in any jerky fashion and keep a mild pillow. At the same time, I suggest you take an opinion from an orthopedic surgeon (orthopedician). This will help us rule out any neck sprain, spondylosis, muscle spasm etc.
If there is no ortho issue, then I suggest you to go through a couple of neck related investigations that I am writing below. These investigations will help us understand any pathology in the neck.
The Probable causes:
1. Neck sprain.Investigations to be done:
2. Muscle spasm.
3. Globus sensation.
1. X-ray AP and lateral view of neck.Preventive measures:
2. X-ray chest AP and lateral view.
3. Upper gastrointestinal endoscopy.
4. MRI neck, if other tests are inconclusive.
1. Avoid neck movements.
2. Hot compress/fomentation over the affected part.
3. Avoid smoking and drinking till the issue gets resolved.
4. Eat nutritious food rich in all vitamins, minerals, proteins.