poor hygiene

anger, behavioral changes, poor grooming habits, poor social skills

Borderline personality disorder (BPD) is defined within psychiatry and related psychological fields as a mental disorder characterized primarily by emotional dysregulation, extreme "black and white" thinking, or "splitting" (believing that something is one of only two possible things, and ignoring any possible "in-betweens"), and chaotic relationships. It is described by mental health professionals as a serious mental illness characterized by pervasive instability in mood, interpersonal relationships, self-image, identity, and behavior, and a disturbance in the individual's sense of self. ... 

decreased sexual desire in males, difficulty sleeping, poor appetite, weakness

In everyday language depression refers to any downturn in mood, which may be relatively transitory and perhaps due to something trivial. This is differentiated from Clinical depression which is marked by symptoms that last two weeks or more and are so severe that they interfere with daily living. ... 

difficulty walking, headache, poor coordination, vision problems

Head injury is a trauma to the head, that may or may not include injury to the brain (see also brain injury). ... 

decreased sexual desire in males, difficulty speaking, poor appetite, weight loss

Clinical depression (also called major depressive disorder, or sometimes unipolar when compared with bipolar disorder) is a state of intense sadness, melancholia or despair that has advanced to the point of being disruptive to an individual's social functioning and/or activities of daily living. Although a low mood or state of dejection that does not affect functioning is often colloquially referred to as depression, clinical depression is a clinical diagnosis and may be different from the everyday meaning of "being depressed." Many people identify the feeling of being depressed as "feeling sad for no reason", or "having no motivation to do anything." One suffering from depression may feel tired, sad, irritable, lazy, unmotivated, and apathetic. Clinical depression is generally acknowledged to be more serious than normal depressed feelings. It often leads to constant negative thinking and sometimes substance abuse. ... 

irregular menstrual periods, poor appetite, stomach pain, upper abdominal pain

Alcoholism is the consumption of or preoccupation with alcoholic beverages to the extent that this behavior interferes with the alcoholic's normal personal, family, social, or work life. Alcohol consumption caused by alcoholism can result in psychological and physiological conditions, and ultimately in death. Alcoholism is one of the world's most costly drug use problems; with the exception of nicotine addiction, alcoholism is more costly to most countries than all other drug use problems combined. ... 

aggressive behavior, behavioral changes, disorganized speech, hallucinations

Schizophrenia (from the Greek word σχιζοφρένεια, or schizophreneia, meaning "split mind") is a psychiatric diagnosis that describes a mental disorder characterized by impairments in the perception or expression of reality and by significant social or occupational dysfunction. A person experiencing schizophrenia is typically characterized as demonstrating disorganized thinking, and as experiencing delusions or hallucinations, in particular auditory hallucinations. ... 

dizziness, headache, vision problems, vomiting

headache, poor coordination, vision problems, vomiting

A brain tumor is any intracranial tumor created by abnormal and uncontrolled cell division, normally either found in the brain itself (neurons, glial cells (astrocytes, oligodendrocytes, ependymal cells), lymphatic tissue, blood vessels), in the cranial nerves (myelin-producing Schwann cells), in the brain envelopes (meninges), skull, pituitary and pineal gland, or spread from cancers primarily located in other organs (metastatic tumors). Primary (true) brain tumors are commonly located in the posterior cranial fossa in children and in the anterior two-thirds of the cerebral hemispheres in adults, although they can affect any part of the brain. ... 

confusion, fever, headache, vomiting

Brain abscess (or cerebral abscess) is an abscess caused by inflammation and collection of infected material coming from local (ear infection, infection of paranasal sinuses, infection of the mastoid air cells of the temporal bone, epidural abscess) or remote (lung, heart, kidney etc.) infectious sources within the brain tissue. The infection may also be introduced through a skull fracture following a head trauma or surgical procedures. Brain abscess is usually associated with congenital heart disease in young children. It may occur at any age but is most frequent in the third decade of life. ... 

stomach swelling, swollen feet, swollen feet and legs, yellow color of skin or eyes

Liver failure is the inability of the liver to perform its normal synthetic and metabolic function as part of normal physiology. Two forms are recognised: ...