The "DSM-IV-TR" provides the following criteria for the diagnosis of a specific phobia:

The book "Phobias" defines a panic attack as "a sudden terror lasting at least a few minutes with typical manifestations of intense fear". These manifestations may include palpitations, sweating, trembling, difficulty breathing, the urge to escape, faintness or dizziness, dry mouth, nausea and/or several other symptoms. As with other specific phobias, patients suffering from cynophobia may display a wide range of these reactions when confronted with a live dog or even when thinking about or presented with an image (static or filmed) of a dog. Furthermore, classic avoidance behavior is also common and may include staying away from areas where dogs might be (i.e., a park), crossing the street to avoid a dog, or avoiding the homes of friends and/or family who own a dog.

A person with astraphobia will often feel anxious during a thunderstorm even when they understand that the threat to them is minimal. Some symptoms are those accompanied with many phobias, such as trembling, crying, sweating, panicked reactions, the sudden feeling of using the bathroom, nausea, the feeling of dread, fingers in the ears and rapid heartbeat. However, there are some reactions that are unique to astraphobia. For instance, reassurance from other people is usually sought, and symptoms worsen when alone. Many people who have astraphobia will look for extra shelter from the storm. They might hide underneath a bed, under the covers, in a closet, in a basement, or any other space where they feel safer. Efforts are usually made to smother the sound of the thunder; the person may cover their ears or curtain the windows.

A sign that someone has astraphobia is a very heightened interest in weather forecasts. An astraphobic person will be alert for news of incoming storms. They may watch the weather on television constantly during rainy bouts and may even track thunderstorms online. This can become severe enough that the person may not go outside without checking the weather first. In very extreme cases, astraphobia can lead to agoraphobia, the fear of leaving the home.

Cynophobia (from the "kýōn" "dog" and "phóbos" "fear") is the fear of dogs. Cynophobia is classified as a specific phobia, under the subtype "animal phobias". According to Dr. Timothy O. Rentz of the Laboratory for the Study of Anxiety Disorders at the University of Texas, animal phobias are among the most common of the specific phobias and 36% of patients who seek treatment report being afraid of dogs or cats. Although snakes and spiders are more common animal phobias, cynophobia is especially debilitating because of the high prevalence of dogs (for example, there are an estimated 25 million stray dogs in India, and an estimated 62 million pet dogs in the United States) and the general ignorance of dog owners to the phobia. The "Diagnostic and Statistical Manual of Mental Disorders" ("DSM-IV-TR") reports that only 12% to 30% of those suffering from a specific phobia will seek treatment.

The following symptoms can be exhibited when a person suffering from equinophobia either thinks of a horse or is physically near one:

- Feeling of terror

- Anxiety (even if the horse is calm)

- Trembling

- Panic

- Palpitations

- Shortness of breath

- Sudden increase in pulse rate

- Nausea

- Crying

Sufferers of equinophobia may also fear other hoofed animals such as donkeys, mules, and ponies.

Zoophobia or animal phobia is a class of specific phobias to particular animals, or an irrational fear or even simply dislike of any non-human animals.

Examples of specific zoophobias would be entomophobias, such as that of bees (apiphobia). Fears of spiders (arachnophobia), birds (ornithophobia) and snakes (ophidiophobia) are also common. See the article at -phobia for the list of various phobias. Sigmund Freud mentioned that an animal phobia is one of the most frequent psychoneurotic diseases among children.

Zoophobia is not the sensible fear of dangerous or threatening animals, such as wild dogs (example: wolves, dingoes, and coyotes), big cats, bears or venomous snakes. It is a phobia of animals that causes distress or dysfunction in the individual's everyday life.

The phobia manifests itself in different ways. For most people it is less about fear than about loathing, similar to the reaction many people have to snakes or rats. Some people experience it almost all the time, others just in response to direct stimuli. Some possible situations that can trigger the loathing of cats are: hearing purring, seeing a cat in real life, imagining the possibility of a cat touching or rubbing against one, the thought of meeting a cat in the dark, seeing the staring eyes of a cat (cats have the tendency to stare at passers-by) cats in pictures and on television, and cat-like toys and cat-like fur. Big cats such as lions or tigers can also trigger the stimuli associated with a phobia.

Astraphobia, also known as astrapophobia, brontophobia, keraunophobia, or tonitrophobia is an abnormal fear of thunder and lightning, a type of specific phobia. It is a treatable phobia that both humans and animals can develop. The term astraphobia is composed of the words ἀστραπή (astrape; lightning) and φόβος (phobos; fear).

Ailurophobia is a type of specific phobia: the persistent, irrational fear of cats. The name comes from the Greek ("ailouros"), "cat" and ("phóbos"), "fear". Other names include felinophobia, elurophobia, and cat phobia.

Blood phobia (also AE: hemophobia or BE: haemophobia) is the extreme and irrational fear of blood, a type of specific phobia. Severe cases of this fear can cause physical reactions that are uncommon in most other fears, specifically vasovagal syncope (fainting). Similar reactions can also occur with trypanophobia and traumatophobia. For this reason, these phobias are categorized as "blood-injection-injury phobia" by the DSM-IV. Some early texts refer to this category as "blood-injury-illness phobia."

Anticipatory anxiety of being out of control and overwhelmed can prevent a person from planning to travel by air. The thought of an upcoming flight can cause great distress, particularly when compelled to travel by air. The most extreme manifestations can include panic attacks or vomiting at the mere sight or mention of an aircraft or air travel.

People with a fear of driving may experience trembling, sweating, accelerated pulse, loss of sense of reality, and thoughts of losing control while driving, even in situations that are reasonably safe. This fear will cause many to avoid driving, create excuses to not drive, or even refuse to get a driver's license for years.

Those with associated post-traumatic stress disorder may experience intrusive thoughts or dreams of the original accident—both when driving and not—lack of emotional responsiveness and irritability.

Individuals with scopophobia generally exhibit symptoms in social situations when attention is brought upon them like public speaking. Several other triggers exist to cause social anxiety. Some examples include: Being introduced to new people, being teased and/or criticized, embarrassing easily, and even answering a cell phone call in public.

Often scopophobia will result in symptoms common with other anxiety disorders. The symptoms of scopophobia include an irrational feelings of panic, feelings of terror, feelings of dread, rapid heartbeat, shortness of breath, nausea, dry mouth, trembling, anxiety and avoidance. Other symptoms related to scopophobia may be hyperventilation, muscle tension, dizziness, uncontrollable shaking or trembling, excessive eye watering and redness of the eyes.

People with arachnophobia tend to feel uneasy in any area they believe could harbor spiders or that has visible signs of their presence, such as webs. If arachnophobics see a spider, they may not enter the general vicinity until they have overcome the panic attack that is often associated with their phobia. Some people scream, cry, have emotional outbursts, experience trouble breathing, sweat, have heart palpitations, or even faint when they come in contact with an area near spiders or their webs. In some extreme cases, even a picture or a realistic drawing of a spider can trigger intense fear.

Most phobias are classified into three categories and, according to the "Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition" (DSM-V), such phobias are considered to be sub-types of anxiety disorder. The categories are:

1. Specific phobias: Fear of particular objects or social situations that immediately results in anxiety and can sometimes lead to panic attacks. Specific phobia may be further subdivided into five categories: animal type, natural environment type, situational type, blood-injection-injury type, and other.

2. Agoraphobia: a generalized fear of leaving home or a small familiar 'safe' area, and of possible panic attacks that might follow. It may also be caused by various specific phobias such as fear of open spaces, social embarrassment (social agoraphobia), fear of contamination (fear of germs, possibly complicated by obsessive-compulsive disorder) or PTSD (post traumatic stress disorder) related to a trauma that occurred out of doors.

3. Social phobia, also known as social anxiety disorder, is when the situation is feared as the person is worried about others judging them.

Phobias vary in severity among individuals. Some individuals can simply avoid the subject of their fear and suffer relatively mild anxiety over that fear. Others suffer full-fledged panic attacks with all the associated disabling symptoms. Most individuals understand that they are suffering from an irrational fear, but are powerless to override their panic reaction. These individuals often report dizziness, loss of bladder or bowel control, tachypnea, feelings of pain, and shortness of breath.

In 2009, a study investigated the impact of anthropophobia in specific cultures. 50 patients diagnosed with anthropophobia, 50 patients diagnosed with neurasthenia, and 50 control subjects were recruited from hospitals in Beijing, China. Measures of anthropophobic and anxiety symptoms were administered to the subjects. The patients with anthropophobia could not even make eye contact with others and were afraid of being watched. The conclusion drawn was that anthropophobics, like neurasthenics, experience anxiety and depression, but "more cognitively and less somatically".

Fear of flying is a fear of being on an airplane (aeroplane), or other flying vehicle, such as a helicopter, while in flight. It is also referred to as flying phobia, flight phobia, aviophobia or aerophobia (although the last also means a fear of drafts or of fresh air).

Fear of flying may be a distinct phobia in itself, or it may be an indirect combination of one or more other disorders, such as claustrophobia (a phobia of being restricted, confined, or unable to escape) or acrophobia (anxiety or dread of being at a great height). It may have other causes as well, such as agoraphobia (especially the type associated with having a panic attack in a place they can't escape from). It is a symptom rather than a disease, and different causes may bring it about in different individuals.

This phobia receives more attention than most other phobias because air travel is often difficult for people to avoid—especially in professional contexts—and because it is common, affecting a significant minority of the population. Inability to maintain emotional control when aloft may prevent a person from going on vacations or visiting family and friends, and it can cripple the career of a businessperson by preventing them from traveling on work-related business.

Spectrophobia (from Latin: "spectrum", n. specio, an appearance, form, image of a thing; an apparition, spectre) or catoptrophobia (from Greek κάτοπτρον "kátoptron", "mirror") is a kind of specific phobia involving a morbid fear of mirrors. This phobia is distinct from eisoptrophobia, which is the fear of one's own reflection.

Ophidiophobia or ophiophobia is a particular type of specific phobia, the abnormal fear of snakes. It is sometimes called by a more general term, herpetophobia, fear of reptiles and/or amphibians. The word comes from the Greek words "ophis" () which refers to snake, and "phobia" () meaning fear.

Care must also be taken to differentiate people who do not like snakes or fear them for their venom or the inherent danger involved. An ophidiophobe not only fears them when in live contact but also dreads to think about them or even see them in video or still pictures.

About a third of adult humans are ophidiophobic, making this the most common reported phobia. Scientists have theorized that mammals may have an innate reaction to snakes, which was vital for their survival as it allowed such dangerous threats to be identified immediately.

Anthropophobia or Anthrophobia (literally "fear of humans", from , "ánthropos", "human" and , "phóbos", "fear"), also called interpersonal relation phobia or social phobia, is pathological fear of people or human company.

Anthropophobia is an extreme, pathological form of shyness and timidity. Being a form of social phobia, it may manifest as fears of blushing or meeting others' gaze, awkwardness and uneasiness when appearing in society, etc. A specific Japanese cultural form is known as taijin kyofusho.

Anthropophobia can be best defined as the fear of people in crowded situations, but can also go beyond and leave the person uncomfortable when being around just one person. Conditions vary depending on the person. Some cases are mild and can be handled while more serious cases can lead to complete social withdrawal and the exclusive use of written and electronic communication.

Equinophobia or hippophobia is a psychological fear of horses. "Equinophobia" is derived from the Greek word φόβος ("phóbos"), meaning "fear" and the Latin word "equus", meaning "horse". The term "hippophobia" is also derived from the Greek word "phóbos" with the prefix derived from the Greek word for horse, ἵππος ("híppos").

An example of the phobia can be found in Freud's psychoanalytic study of Little Hans.

In many cases a phobic fear of mice is a socially induced conditioned response, combined with (and originated in) the startle response (a response to an unexpected stimulus) common in many animals, including humans, rather than a real disorder. At the same time, as is common with specific phobias, an occasional fright may give rise to abnormal anxiety that requires treatment.

Driving phobia, also called vehophobia or a fear of driving, can be severe enough to be considered an intense, persistent fear or phobia. It is often great enough that people will avoid driving at all costs, and instead find someone to drive them or use public transportation, regardless of how inconvenient or expensive.

A fear of driving may escalate to a phobia during difficult driving situations, such as freeway driving or congested traffic.

Arachnophobia is the fear of spiders and other arachnids such as scorpions.

Autophobia, also called monophobia, isolophobia, or eremophobia, is the specific phobia of isolation; a morbid fear of being egotistical, or a dread of being alone or isolated. Sufferers need not be physically alone, but just to believe that they are being ignored or unloved. Contrary to what would be implied by a literal reading of the term, "autophobia" does not describe a "fear of oneself". The disorder typically develops from and is associated with other anxiety disorders.

Autophobia can be associated with or accompanied by several other phobias such as agoraphobia, and is generally considered to be a part of the agoraphobic cluster. This means that autophobia has a lot of the same characteristics as certain anxiety disorders and hyperventilation disorders. The main concern of people with phobias in the agoraphobic cluster is getting help in case of emergency. This means people might be afraid of going out in public, being caught in a crowd, being alone, or being stranded.

Autophobia is not to be confused with agoraphobia (fear of being in public, or caught in large crowds), self-hatred, or social anxiety although it can be closely related to these things. It is its own phobia that tends to be accompanied by other anxiety disorders and phobias.

The symptoms of autophobia vary by case. However, there are some symptoms that a multitude of people with this disease suffer from. An intense amount of apprehension and anxiety when you are alone or think about situations where you would be secluded is one of the most common indications that a person is autophobic. People with this disorder also commonly believe that there is an impending disaster waiting to occur whenever they are left alone. For this reason, autophobes go to extreme lengths to avoid being in isolation. However, people with this disease often do not need to be in "physical" isolation to feel abandoned. Autophobes will often be in a crowded area or group of people and feel as though they are completely secluded.

There has also been some connection to autophobia being diagnosed in people who also suffer from borderline personality disorders.

Below is a list of other symptoms that are sometimes associated with autophobia:

- Mental symptoms:

- Fear of fainting

- A disability to concentrate on anything other than the disease

- Fear of losing your mind

- Failure to think clearly

- Emotional symptoms:

- Stress over up-coming times and places where you may be alone

- Fear of being secluded

- Physical symptoms:

- Lightheadedness, dizziness

- Sweating

- Shaking

- Nausea

- Cold and hot flashes

- Numbness or tingling feelings

- Dry mouth

- Increased heart rate