Skip to content
Check Your Symptoms Find A Doctor Find Lowest Drug Prices

    Subscribe

    WebMD Symptom Checker

    Advertisement

    WebMD Symptom Checker

    Paranoid behavior and Poor concentration

    WebMD Symptom Checker helps you find the most common medical conditions indicated by the symptoms paranoid behavior and poor concentration including Depression (Adult), Bipolar disorder, and Schizophrenia.

    There are 11 conditions associated with paranoid behavior and poor concentration. The links below will provide you with more detailed information on these medical conditions from the WebMD Symptom Checker and help provide a better understanding of causes and treatment of these related conditions.

    • Depression (Adult)

      Depression is a painful sadness that interferes with daily life and includes hopelessness, anxiety, and more.

    • Bipolar disorder

      Bipolar disorder causes extreme mood swings between depression and mania.

    • Schizophrenia

      Schizophrenia is a serious, chronic mental illness that causes delusional or hallucinogenic thoughts.

    • Vitamin B12 deficiency

      Vitamin B12 deficiency symptoms include fatigue, pale skin, weakness, sleepiness, numbness, weakness, and more.

    • Alzheimer's disease

      Alzheimer's disease is type of dementia that causes memory loss, as well as thinking and behavior problems.

    • Head injury

      Symptoms of a head injury vary but include headache, nausea, dizziness, memory problems, confusion, and more.

    • Dementia in head injury

      Dementia resulting from a head injury may cause memory problems, difficulty speaking, and personality changes.

    • Epilepsy (temporal lobe)

      Epilepsy is a condition marked by seizures.

    • Attention deficit hyperactivity disorder (ADHD)

      Attention deficit hyperactivity disorder (ADHD) makes it hard to concentrate and focus.

    • Depression (Child and Adolescent)

      Depression is a painful sadness that interferes with a child's schoolwork, family life, and social activities.

    • Insulin reaction (hypoglycemia)

      An insulin reaction is the result of low blood sugar and causes anxiety, hunger, shaking, dizziness, and more.

    Advertisement