My Mother , aged 72 is feeling vertigo (for 2-5 sec) when she is ling down on bed and keeping her head straight (chin up). This is only one position where she is feeling vertigo. She has hypertension also. For last one month she was almost on bed as had back pain (on right hip) and taking physio help. Sine last 2-3 days she started walking and carrying out routine activity normally. Medical History : Asthma She had cold also for last 3 days. Please suggest.