science

Post-coital tristesse

Post-coital tristesse is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Post-coital tristesse rather than just read about it. In short: Post-coital tristesse (; PCT), also known as post-coital dysphoria (PCD), is the feeling of sadness, anxiety, agitation or aggression, after orgasm in sexual intercourse or masturbation. Its name comes from Neo-Latin postcoitalis and French tristesse, meaning "sadness".

Key takeaways

Post-coital tristesse belongs to science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Post-coital tristesse to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Post-coital tristesse from memory before moving on to harder problems.

Reference excerpt

Post-coital tristesse (; PCT), also known as post-coital dysphoria (PCD), is the feeling of sadness, anxiety, agitation or aggression, after orgasm in sexual intercourse or masturbation. Its name comes from Neo-Latin postcoitalis and French tristesse, meaning "sadness". Many people with PCT may exhibit strong feelings of anxiety lasting from five minutes to two hours after coitus.

Historical and literary references The phenomenon is attributed to the Greek medical writer Galen, who is supposed to have written that "Every animal is sad after coitus except the human female and the rooster." However, this quotation is not found in Galen's surviving writings, so it may be a later fabrication. Sigmund Freud and Havelock Ellis were familiar with the proverb, which they both attributed to an anonymous author, and it was not until decades later that the maxim became connected with Galen among sexologists. The philosopher Baruch Spinoza, in his Tractatus de Intellectus Emendatione, wrote: "For as far as sensual pleasure is concerned, the mind is so caught up in it, as if at peace in a [true] good, that it is quite prevented from thinking of anything else. But after the enjoyment of sensual pleasure is passed, the greatest sadness follows. If this does not completely engross, still it thoroughly confuses and dulls the mind." Arthur Schopenhauer, writing later on the phenomenon, observed that "directly after copulation the devil's laughter is heard."

General prevalence and factors A study found the experience of postcoital symptoms was highly prevalent across both men and women, with 94.3% of all participants having experienced at least one symptom over their lifetime. Symptoms were reported experienced by 73.5% of participants after consensual sexual intercourse, 46.6% after masturbation, and 33.9% reporting the symptoms only following orgasm. The likelihood of this experience is heightened by conditions such as anxiety, depression, a history of childhood or adult trauma.

Prevalence and symptoms in men and women One study reported that among a sample of 1208 male participants, 40% of them had experienced PCT at least once in their lifetime and 20% reported experiencing PCT in the four weeks preceding the study. This study also reports that 3–4% of the sample experienced PCT symptoms on a regular basis. According to the same study, PCT among males is associated with current psychological distress, sexual abuse during childhood, and with several sexual dysfunctions. The most common postcoital symptoms for men are unhappiness and low energy. A study specifically on women reported that about 46% of participants had experienced PCD symptoms at least once in their lifetime, with 5.1% reporting occurrences a few times in the past four weeks. The study also reported that there appeared to be no correlation between PCT and intimacy in close relationships. Women experiencing postnatal depression are considered more likely to have PCD, potentially due to heightened sensitivity to hormonal fluctuations. The most common postcoital symptoms reported for women were mood swings and sadness. Compared to men, women also reported experiencing higher rates of negative emotions, such as sadness, mood swings, frustration, and worthlessness.

Prevalence and factors in sexual minority populations Another study, found that 81% of participants identifying as bisexual or sexually fluid and 42% of males attracted to other males had experienced PCD at least once. Lower satisfaction with their sex life was found to be a factor to experiencing PCD for those identifying as bisexual or sexually fluid, with internalized sexual prejudice not significantly being a factor. For males attracted to other males, PCD was associated with both lower satisfaction with their sex life and perceived discrimination, but similarly, internalized sexual prejudice was not found to be a significant factor.

See also After Sex (Post Coïtum, Animal Triste), 1997 film La petite mort Post-nut clarity Prolactin Refractory period (sex)

References

External links

Worked examples

Example 1 — a first encounter with Post-coital tristesse

Start with the simplest possible case. Write down what Post-coital tristesse claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Post-coital tristesse before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Post-coital tristesse ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Post-coital tristesse

In research: Post-coital tristesse appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Post-coital tristesse in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Post-coital tristesse is common in secondary-school and first-year university syllabi. It links to neighbouring topics French medical phrases, Orgasm, Sexual health, so understanding it makes those chapters shorter.
In everyday life: Look for Post-coital tristesse outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Post-coital tristesse in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Post-coital tristesse means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Post-coital tristesse out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Post-coital tristesse in simple terms?

Why does Post-coital tristesse matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Post-coital tristesse?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Post-coital tristesse.