0
Firstly lid lag is found in HYPERthyroidism, not hypo. The explanation for this is as follows:
If you (a normal person) takes an overdose of thyroxine, you would get lid lag, but not exophthalmos. This is because thyroxine is a beta adrenoceptor sensitiser. Thus the beta receptors in your heart are more active as adrenaline levels rise. Similarly, the beta receptors in levator palpabrae superioris (the muscles that open the eye) are more sensitive, and hold your eyes open. You will remember from Anatomy that the nerve supply to that muscle is half from the third nerve (occulomotor) and half from the sympathetic chain. This is the opposite of what happens when you cut the sympathetic chain (as in Horner's syndrome) when the eye will partly close.
Wiki User
∙ 13y ago
Add your answer:
Earn +20 pts
What is lid lag?
Lid lag is a finding on physical exam suggestive of hyperthyroidism. If lid lag is present, that means that on exam the patient's lid didn't lower when the patient looked down.
Does hypothyroidism cause bloating?
Hypothyroidism causes you to retain water that leads to bloating.
Causes of high TSH?
hypothyroidism
Deficiency of which mineral causes dwarfism and hypothyroidism?
Dwarfism is zinc deficiency. hypothyroidism is iodine deficiency.
Can you have a stroke from hypothyroidism?
Articles and resources on hypothyroidism causes, <a href='http://www.hypothyroidismcenter.com/hypothyroidism-treatments/'>hypothyroid treatments</a>, natural treatments, special womens concerns and hypothroidism friendly diets.
What are the causes of delayed ankle reflex relaxation?
hypothyroidism .pregnancy . ankle odema
How do you get hypothyroidism disorder?
Here are some causes for hypothyroidism■ Autoimmune disease.■ Surgery on the thyroid gland■ Radiation treatment■ Congenital hypothyroidism■ Thyroiditis■ Medicines■ Too much or too little iodine■ Damage to the pituitary gland■ Rare disorders
What are the hormones that causes diseases?
Diabetes Dwarfism Hypothyroidism/Hyperthroidism Addison's Disease Grave's Disease
Hypo secretion of the thyroid gland in adults causes?
sharnay marie hart/goiter
What is the difference between primary and secondary hypothyroidism.?
Primary hypothyroidism is caused by a deficiency in the thyroid itself. Secondary hypothyroidism is caused by an "outside" influence, usually a medication that causes the thyroid to not secrete the necessary hormones or an insufficient quantity, or may be caused by a primary disease process that in turn affects the thyroid gland. Sometimes secondary hypothyroidism is caused by the treatments for cancer, for example.
How does hypothyroidism affect hemoglobin levels?
Having hypothyroidism can affect your hemoglobin levels because the low levels of thyroid causes the hemoglobin levels to drop too. These are also linked to B12 deficiency and macrocytic anemia.
Why dows running hot water over a tight lid make a jar easier to open?
The heat causes a slight expansion of the lid, which relieves pressure of the lid against the jar.
