When is Panbesy or Duromine prescribed for weight loss?

Dr Francisco has provided an excellent answer, so I shall try not to repeat anything, but I would like to add that perhaps you could consider seeking a body plethysmography - this aims to measure body fat and some centres might do CT or MRI scans to look for internal fat deposits. Most sports medicine centres will be able to provide pre-participation screenings, that look at the things Dr Francisco mentions in addition to a full MSK screen and assessment of your exercise/health goals. We can also provide you with advice on exercise as well as dietary consultations.

Dull ache at the side of the neck is pretty unspecific, but there may be several causes for the ache/ pain. Commonly, it could be due to wear and tear of the neck/ cervical spine, and this is called cervical spondylosis. As your dad is persistently symptomatic, he would need to see an orthopaedic surgeon. A complete history and physical examination would have to be done, and often times further radiological investigations (X-rays, MRI) would have to be done to confirm the diagnosis. The problem can then be treated accordingly, and is usually done via medication or physiotherapy.