Clara is depressed after losing her job. she has been complaining of a severe backache that is affecting her daily life. however, her physician has examined her and found that there is no medical cause for her condition. according to the symptoms displayed by clara, she is most likely to be suffering from:

somatic symptom disorder

Explanation:

Somatic Symptom Disorder is a group of psychiatric disorders characterized by physical symptoms that suggest, but are not fully explained by, a physical disorder, and cause significant discomfort or interfere with social, occupational, or other functions. In this type of disorder the physical symptoms or their severity and duration cannot be explained by an underlying physical condition.

That is, the patient feels the discomfort of a certain physical condition, such as Clara who has a severe back pain, however the doctor does not find a physical cause for these symptoms.