Answer: The answer is Depression
Step-by-step explanation:
Depression is a mental health disorder which is symptomised by separation from loved ones, loss of interest in activities. It can be caused by biological, psychological and social sources of distress. It is characterised by a feeling of sadness, withdrawal and loss of interest in pleasurable activities such as hobbies, tiredness. The individual's sleep cycle can also be affected such that they have trouble sleeping and waking early, not being able to sleep or even sleeping too much.
Depression can also be a common response to life changing experiences such as terminal illnesses like Cancer.