People with small penis syndrome or PDD do not have an unusually small penis. Instead, they are seriously concerned about their penis size. Having a small penis is not a medical diagnosis; very rarely, a person's penis is small enough to interfere with sexual functioning, and doctors refer to it as a micropenis.

People with a micropenis have a penis at least 2.5 standard deviations smaller than the average penis. PDD is a type of BDD that is a disorder that impairs a person's perception of their body, and BDD can trigger great anxiety in a person about their appearance. People with PDD are ashamed and worried about their penis size. They may mistakenly believe they have a micropenis, even though their penis size is average.

Estimates of average penis size vary. Many people believe a typical penis is 6 inches (15.2 cm) long, which is wrong and misleading. And misleading information is potentially a cause for concern in those concerned about having a small penis. Analysis of data from 15,521 men in 2014 found the following regarding penis size:

• The average length of the erect penis is 9.16 cm (cm) or 3.61.
• The average erect penis is 13.12 cm (5.17 inches) long.
• In penises longer than 15.2 cm, which is rare in erection, the length of this penis decreases to its required value of 90%.
• Other studies have tried to measure what counts as a micropenis. A 2014 study defined a micropenis as a penis shorter than 7 cm (about 2.75 inches) when flaccid and taut.

Also, in a study of more than 52,000 heterosexual men and women, 85 percent of women said they were satisfied with the size of their partner's penis. In contrast, only 55 percent of men reported being happy with their penis size.

It is common for people to feel psychological pressure on themselves when they see larger male genitalia, especially in media and pornography, and worry that they may not be big enough. However, people with small penis syndrome are obsessively concerned about penis size. Small penis syndrome, or PDD, has some symptoms:

• Constantly comparing penis sizes with those of others, including those in the media
• Belief that the penis is tiny despite evidence to the contrary
• Distorted perceptions of penis size
• Putting the penis size at an unusually high value
• Feeling embarrassed or embarrassed about penis size
• Difficulty having sex with their partner because of concerns about penis size
• Decreased sexual function, including erection or orgasm
Some people with small penis syndrome have other BDD symptoms:
• They are obsessively preoccupied with appearance
• Engaging in repetitive or compulsive behavior related to appearance, such as wearing or buying clothes
• Having chronic distress about appearance
• Depression or anxiety about appearance

Although small penis syndrome and BDD may seem like the same condition, there are fundamental differences. Small penis syndrome is not a medical diagnosis, whereas doctors may diagnose a person as a diagnosis of BDD.

For people who are mild to moderately concerned about their penis size, it may be helpful to research data on average penile dimensions or consult a doctor about what constitutes a micropenis. If a person is concerned about sexual performance, they may find comfort in the reassurance and support of a partner. Studies show that most heterosexual women are satisfied with their partner's penis size.

Medical treatment can help men with BDD or worry about penis size. Some treatment options are:

• Cognitive behavioral therapy (CBT): This type of therapy helps people understand how their thoughts affect their emotions and behavior and can help them find ways to reduce anxiety.
• Understanding and addressing triggers: For some, specific triggers, such as pornography or relationship problems, can cause penis-size anxiety. Some people can reduce symptoms by identifying their triggers and working to manage them.
• Sex therapy or couples counseling: When penis size concerns affect a person's relationship or ability to have sex, treatment can help a couple work together to overcome anxiety.

Treatments such as ligament surgery and fat transfer to the penis can be applied for penis enlargement.

People who are concerned about the size of their penis or their feelings about penis size should consult a doctor for help and support. Here are some questions to ask their doctor:

• Is my penis size in the average range?
• Is it common to be worried about penis size?
• What can I do to overcome my anxiety?
• Can you take me to a therapist?
• Are there symptoms of BDD?
• Are there effective strategies for managing anxiety-related sexual dysfunction?

Worries about penis size can be frustrating and affect your self-esteem and relationships. Misperceptions about penis size can lead people to believe their penis is smaller than others, even in the average range.

Sex education, support from a partner, and appropriate treatments can help people with small penis syndrome and PDD manage their anxiety. Or you can try penile augmentation treatments.