hunger

hunger /hun·ger/ (hung´er) a craving, as for food.

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air hunger  Kussmaul's respiration.

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hun·ger (hnggr)

n.

1. A strong desire or need for food.

2. The discomfort, weakness, or pain caused by a prolonged lack of food.

3. A strong desire or craving, as for affection.

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hunger,

a physical sensation usually associated with a craving or desire for food.

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hunger [hung´ger]

a craving, as for food.

air hunger Kussmaul's respiration.

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hunger

a craving, as for food. A localized subjective sensation, assumed to occur in animals, caused by emptiness and a resulting hypermotility of the stomach.

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hunger hollow

paralumbar fossa in ruminants.

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Patient discussion about hunger.

Q. Why do I feel to eat sweet when I am not much hungry and I feel that it soothes my mind when I eat sweets….?

A. craving sweets can be a symptom to PMS...but it seems that it would be impossible for you :)
it can also be a symptom for "seasonal depression". sort of a mood swing during fall or winters. it's very common and has an ironic initials- SAD Seasonal Affective Disorder :)
here are other symptoms of SAD:
http://www.healthline.com/adamcontent/seasonal-affective-disorder

Q. Im hungry all the time, even when my stomach is full.what causes this or what is solutions.

A. there are several possible causes for constant hunger. here is a symptom checker that i typed "always hungry" in, and it's suggestion. check if something looks reasonable to you:
http://www.healthline.com/symptomsearch?addterm=Always%20Hungry