I'm sorry to hear about the discomfort you're experiencing with the clicking sound in your teeth, continuous pain, and muscle spasms in your face and neck area. These symptoms could be related to issues involving the temporomandibular joint (TMJ), muscle strain, or nerve irritation.

The clicking sound in the teeth area often suggests TMJ dysfunction, which can cause pain and muscle spasms in the facial and neck muscles, including the sternocleidomastoid muscle. Muscle spasms may result from muscle overuse, inflammation, or nerve-related causes.

For relief, medications like Flexura D Tablet, which contains Diclofenac (a pain and inflammation reducer) and Metaxalone (a muscle relaxant), are sometimes used to alleviate muscle spasms and pain. However, it is important to use such medications only under a doctor's prescription and guidance.

Recommendations:

• Please consult a dentist or an oral and maxillofacial specialist to evaluate the clicking sound and pain in your jaw.
• A neurologist or a pain specialist may also be helpful if muscle spasms persist or worsen.
• Avoid excessive jaw movements, chewing hard foods, or clenching your teeth.
• Apply warm compresses to the affected muscles to help reduce spasms.
• Follow any prescribed medication instructions carefully and report any side effects to your doctor.

If the pain or spasms worsen suddenly, or if you experience other symptoms like difficulty swallowing or breathing, seek emergency medical care immediately.

Consulting a specialist will help identify the exact cause and provide appropriate treatment tailored to your condition.To narrow down potential causes, we will need some more information.Please tell me your age and gender.