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Buerger's Disease is a vascular disease
seen mostly in male smokers. It has been found that nicotine
present in cigarette is responsible for pathological change in blood vessels. Its good that he has quit smoking completely. But presently he is having severe pain
and doctors advised him to take cannabis puff for pain. See cannabis is different from tobacco and nicotine is absent in cannabis so theoretically there is no risk in taking cannabis puffs. But I would strongly advise you to control his intake of puffs. The substances are addicting and he may become addictive to cannabis. Consult his doctor and take opinion regarding some non opioid analgesic
. Many medicines like Ibuprofen
can be used in mild to moderate pain. For severe pain he should take some oral cannabis preparation in consultation with his doctor.
Dr. Seikhoo Bishnoi, MD