What are the causes of neck pain?

Causes of neck pain

Mechanical problem:

• Postural (e.g. falling sleep in an awkward position)
• Whiplash injury
• Facet joints problem
• Cervical

Inflammatory conditions in the neck:

• Infection
• Axial spondyloarthritis
• Psoriatic arthritis
• Rheumatoid arthritis
• Polymyalgia rheumatica
• Discitis 

Metabolic problems:

• Axial calcium pyrophosphate dihydrate disease
• Fibrous dysplasia
• Paget's disease 

Neoplastic conditions:

• Metastases
• Myeloma
• Lymphoma
• Intrathecal tumour 

Others:

• Fibromyalgia (FM)
• Torticollis 

Referred pain from nearby structures:

• Pharynx
• Cervical LN
• Teeth
• Angina pectoris
• Aortic aneurysm
• Pancoast tumour
• Diaphragm

[ Source: Davidson's principles and practice of medicine 23rd Edition; page 997]