Mental tension, worry, excitement, lack of physical fatigue, adverse weather, tight clothing, uncomfortable mattress and drinking tea or coffee all can lead to sleeplessness. Indigestion and gas-trouble can also drive sleep away. Besides, sleep has a tendency to gradually diminish with advancing age.

Treatment
There are various treatments in homeopathy that are useful for this disease. But the victim should matches with the symptoms.

Arsenic 30: Useful for sleeplessness from anxiety and fear, the person just cannot fall asleep from 12 to 2 a.m., sleeplessness causes undue prostration, the person likes to sleep in `head-high` position. These are the symptoms for which the said medicine is required.

Coffea 30: This medicine can be useful to treat sleeplessness due to excitement, especially from joyous ideas, light sleep with almost constant movement of the body, especially after 3 a.m.

Gelsemium 30: Gelsemium 30 is used for sleeplessness from physical exhaustion and excessive thinking, the person is drowsy, yet cannot fall asleep. Other general features include as a nervous, apprehensive nature, thirstlessness and trembling of the body.

Nux vomica 30: This medicine is useful for sleeplessness from abuse of stimulants like tea, coffee or alcohol, sleeplessness from lack of physical fatigue due to sedentary life-style, cannot sleep after 3 a.m. until towards morning, awakens feeling tired and wretched, other general features include as highly irritable and sensitive nature, frequent, ineffectual desire for stools, aversion to cold air.