What medical conditions cause hypersomnia?
Hypersomnia may be caused by another sleep disorder (such as narcolepsy or sleep apnea), dysfunction of the autonomic nervous system, or drug or alcohol abuse. In some cases it results from a physical problem, such as a tumor, head trauma, or injury to the central nervous system.
What are the signs and symptoms of hypersomnia?
Symptoms of hypersomnia

- Feeling unusually tired all the time.
- The need for daytime naps.
- Feeling drowsy, despite sleeping and napping – not refreshed on waking up.
- Difficulty thinking and making decisions – the mind feels ‘foggy’
- Apathy.
- Memory or concentration difficulties.
Does hypersomnia affect memory?
Posttraumatic hypersomnia Abnormal sleepiness may be observed within 6 to 18 months of head trauma. Clinically related to idiopathic hypersomnia, it may be associated with headaches, memory loss, and lack of concentration.
What are the symptoms of sudden dizziness and nausea?
However, others may experience symptoms like dizziness and lightheadedness. Other symptoms may include nausea, headache, or even fainting episodes. The drop in blood pressure means less blood flows to your brain, muscles, and organs, which can lead to symptoms.

What are some of the symptoms of hypersomnia?
They may also have other sleep-related problems, including a lack of energy and trouble thinking clearly. According to the National Sleep Foundation, up to 40% of people have some symptoms of hypersomnia from time to time. There are several potential causes of hypersomnia, including:
Why do I feel lightheaded and Dizzy all the time?
Dizziness is the feeling of being lightheaded, woozy, or unbalanced. It affects the sensory organs, specifically the eyes and ears, so it can sometimes cause fainting. Dizziness isn’t a disease, but rather a symptom of various disorders. Vertigo and disequilibrium may cause a feeling of dizziness, but those two terms describe different symptoms.
What causes dizziness when you have high blood pressure?
What Causes Dizziness ? 1 Low Blood Sugar (Hypoglycemia) 2 Labyrinthitis. 3 What Is Hypotension? 4 Meniere’s Disease. 5 Everything You Need to Know About High Blood Pressure (Hypertension) 6 (more items)
They may also have other sleep-related problems, including a lack of energy and trouble thinking clearly. According to the National Sleep Foundation, up to 40% of people have some symptoms of hypersomnia from time to time. There are several potential causes of hypersomnia, including:
Why do I get nausea and dizziness all the time?
If you get nausea along with it, it could be due to problems like vertigo, migraine, or low blood pressure. Usually, dizziness with nausea isn’t serious.
Why do I feel lightheaded and Dizzy all of a sudden?
Circulation problems that cause dizziness. You may feel dizzy, faint or off balance if your heart isn’t pumping enough blood to your brain. Causes include: Drop in blood pressure. A dramatic drop in your systolic blood pressure — the higher number in your blood pressure reading — may result in brief lightheadedness or a feeling of faintness.
Are there any medications that can cause dizziness?
Medications. Dizziness can be a side effect of certain medications — such as anti-seizure drugs, antidepressants, sedatives and tranquilizers. In particular, blood pressure lowering medications may cause faintness if they lower your blood pressure too much.