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What causes excessive sleep during daytime?

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Posted on Thu, 12 May 2016
Question: I get very sleepy in the afternoon. Sometimes I have to leave work early and go straight to bed.It could be old age (82) or pneumonia or something else.
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Answered by Dr. Shehzad Topiwala (15 minutes later)
Brief Answer:
Thyroid

Detailed Answer:
Sorry to learn about your excessive sleepiness.

An under-active thyroid can result in such symptoms.

When I see someone like you in my practice, I typically order the following blood tests in addition to a detailed physical examination:

CBC (Complete Blood Count, also known as Hemogram; includes Hemoglobin, WBC and Platelet counts)
Electrolytes (Sodium and Potassium in particular)
Calcium
HbA1c (Glycosylated Hemoglobin = your 3 month glucose average)
Liver function tests (SGOT , SGPT, Albumin, Bilirubin, Alkaline Phosphatase)
Kidney function tests (BUN, Creatinine)
TSH
25 hydroxy Vitamin D

A condition called Sleep apnea can also result in similar symptoms. You will need to undergo a sleep study test to confirm this
Above answer was peer-reviewed by : Dr. Chakravarthy Mazumdar
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Answered by
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Dr. Shehzad Topiwala

Endocrinologist

Practicing since :2001

Answered : 1663 Questions

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What causes excessive sleep during daytime?

Brief Answer: Thyroid Detailed Answer: Sorry to learn about your excessive sleepiness. An under-active thyroid can result in such symptoms. When I see someone like you in my practice, I typically order the following blood tests in addition to a detailed physical examination: CBC (Complete Blood Count, also known as Hemogram; includes Hemoglobin, WBC and Platelet counts) Electrolytes (Sodium and Potassium in particular) Calcium HbA1c (Glycosylated Hemoglobin = your 3 month glucose average) Liver function tests (SGOT , SGPT, Albumin, Bilirubin, Alkaline Phosphatase) Kidney function tests (BUN, Creatinine) TSH 25 hydroxy Vitamin D A condition called Sleep apnea can also result in similar symptoms. You will need to undergo a sleep study test to confirm this