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Only an examination by a dermatologist
can positively diagnose the leg problem Everything else is mere guess work...Sun, thyroid or pressure don't seem to fit the description...
is vague term - unsteadiness. If there is definite sense of rotation, it is vertigo. If it is from getting up from bed, it may be from postural hypo-tension.. Did you check BP? It can be from anaemia – what is his haemoglobin? Has an ECG been done?
The body's balancing mechanism is in the inner ear
. An ENT (Ear Nose Throat) specialist is the one to see - especially in the presence of tinnitus
. They have special tests to confirm or exclude the contribution of the ear. If there are no clues, you have to be followed up by a neurologist
Wishing speedy recovery