hi i had gone through your query and understand your concerns. i would come up with two possibilities to fit your condition.these include

1.first possibility is,RHEUMATOID ARTHRITIS; it is an auto immune disease.confirm with blood test for RA factor,CRP,ASO tritre,and ESR.

2.second possibility is,DEGENERATIVE JOINT DIERESES;due to hormonal imbalance like hypothyroidism,obesity,stress,lack of proper nutrition are the causes.

treatment plan;

i advise you taking Homeopathic medicines gives safe and permanent cure for your complaints.but it require proper case taking and through examination of the case is needed in all aspects.

consult your local homeopathic physician for correct diagnosis of the case and remedy to fit your complaints. or mail me at drravib4u@yahoo.co.in
I hope this is helpful for you, thank you          

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1. going by the case presentation, it seems that fleeting joint pain could be due to Rheumatic disease, and to rule out the possibility Laboratory Investigations like RA factor,CRP,ESR are helpful diagnostic value, even if these comes out negative one has to take an opinion of Rheumatologist for further work up of the case who might treat it as sero negative rheumatic disease.
2. crawling sensation could be due to high blood sugar level or due to nerve entrapment due to Sciatica, so MRI spine and Blood glucose level are ideal investigations.
3. take: brown rice, wheat,black gram,horse gram,garlic, brinjal,mango, pomegranate,lemon,black grapes,milk,coconut water,tamarind,meat soup, ghee, oil.
4. Avoid: chickpeas,peas,split red gram,bitter gourd,jamun,beans,honey, excess night waking,fasting,physical exertion,excessive walking.
5. massage with olive oil
6. fry brinjal in castor oil and eat.
7. Consult with an Ayurveda Physician regarding use of Maharasnadi-Dashmool decoction, mahavishgarbh-mahamash-mahanarayan oil.

Hello Kamathz,
Your sister's joint pains can be cured after taking her case in detail. From your question, I presume that no serious pathology has developed in spite of the problems existing for last 20-25 years. This is likely to be a psychosomatic problem. This simply means she has to be studied well considering the mental and physical symptoms in detail. The stress and life situations are to be understood along with her reaction to them. Homoeopathy can offer your sister cure after detailed case taking. The mental make up, physical make up and the general reactions vary from individual to individual. This is because the genetic tendencies vary. This is true both in the mental and physical levels. Once we understand her past history, personal history and all the above mentioned details, Homoeopathy can surely offer her cure. There is no meaning in saying that you have tried Homoeopathy once. The approach, the efficiency and the knowledge of each doctor vary from individual to individual doctor. So my advise is please do not lose hope. In Homoeopathy only the mind of the patient is studied well to cure.
My best wishes for an earliest recovery through Homoeopathy.
Dr. C. J. Varghese