Depression is an illness that is characterized by a depressed mood. Although many people can feel down occasionally, depression has symptoms that occur every day or nearly every day for two weeks or longer. Depression symptoms can affect daily life and can impair the ability to function normally. Factors that affect the risk of developing depression include genetics (because a family history of depression makes depression more likely), biochemical factors such as hormonal imbalances and environmental factors such as stressful situations. Knowing the physical symptoms of depression can help lead to early, effective treatment.
Weight Change
Depression can lead to a loss of appetite. This loss of appetite can lead to a reduction in caloric intake and subsequent weight loss. On the other hand, some people with depression eat more in an attempt to feel better. This leads to an increase in caloric intake and subsequent weight gain.
Pain
Physical pain that is not easily explained or does not go away with treatment is a symptom of depression. Examples of this type of pain include back pain, stomachaches and headaches.
Insufficient Sleep
Because some people with depression have trouble going to sleep or staying asleep, they may start appearing tired and develop dark bags under their eyes. Depression can cause sluggish movements due to lack of sleep, and there can be a loss of alertness. They may fall asleep unintentionally at unusual times.
Loss of Interest
Depression can lead to a loss of interest in activities that normally would be pleasurable, such as hobbies. This loss of interest can extend into a loss of interest in sexual activity.
Irritability
Depression can lead to an increase in irritability. Irritation can lead to increased blood pressure and a flushed face. People who are depressed can be easily annoyed and may express their annoyance.
Hopeless Feelings
Depression can cause feelings of sadness and hopelessness. Physical signs of this sadness can be eyes that are cast downward. A normal walking cadence can be replaced with one that more closely resembles trudging.


