Beta blockers mask all effects of hypoglycemia except ?

Ans. is 'c' i.e., Dizziness Symptoms of hypoglycemia are attributable to :- i) Sympathetic stimulation : Sweating, tremor, tachycardia palpitations and anxiety. These are the warning signs. ii) Cerebral glucose deficiency : Decreased cognitive functions, dizziness and decreased concentration. Use of beta-blockers, especially in diabetics who are taking treatment, may mask typical sympathetic system mediated symptoms of hypoglycemia such as sweating, tremor, tachycardia, and palpitations. Thus, dangerous severe hypoglycemia can occur without any warning signs.