What HPD means

 

HPD is a Cluster B personality disorder characterized by a pervasive pattern of excessive emotionality and attention-seeking. The important word is pervasive: these aren't just occasional dramatic behaviors; they're a longstanding pattern across different situations.

The main features

Your list corresponds closely with the DSM-5-TR features:

• Discomfort when not the center of attention
• Interactions that may involve inappropriate sexually seductive or provocative behavior
• Rapidly shifting or shallow emotional expression
• Using physical appearance to draw attention
• Speech that is impressionistic and lacking in detail
• Dramatic, theatrical expression of emotion
• Being suggestible or easily influenced
• Seeing relationships as more intimate than they actually are

So one thing missing from your list is sexually seductive or provocative behavior, which is one of the diagnostic features.

One wording change I'd make

I'd avoid saying:

“Emotions can feel shallow or put-on.”

That can sound as though the person is deliberately faking their emotions.

A better description is:

Emotional expression may be rapidly changing, highly dramatic, and sometimes appear shallow to other people.

The person's emotions can still be genuinely experienced.

Similarly, “acts dramatically to get attention” can imply conscious manipulation. The clinical description is more neutral: attention-seeking and dramatic emotional expression are characteristic patterns of the disorder.

HPD isn't simply “being dramatic”

This is an important distinction.

Someone might be:

• outgoing
• expressive
• theatrical
• fashion-conscious
• flirtatious
• emotionally enthusiastic
• sociable

without having HPD.

The diagnosis requires a persistent pattern involving multiple characteristic features, beginning by adulthood and causing clinically significant problems or impairment.

HPD compared with BPD

Since you've just been studying BPD, this comparison is particularly useful:

BPD	HPD
Intense emotional instability	Excessive emotionality
Strong fear of abandonment	Strong need for attention
Unstable relationships	Relationships may be perceived as more intimate than they are
Unstable self-image	Self-esteem may be strongly influenced by attention/approval
Impulsivity can be prominent	Suggestibility can be prominent
Chronic emptiness can occur	Attention-seeking is more central
Self-harm/suicidal behavior can occur	Not a defining diagnostic feature

There can obviously be overlap, and someone can have traits associated with more than one personality disorder.

And an important point about treatment

HPD is treatable. Psychotherapy is generally the main approach, particularly when the person wants help changing patterns that are causing problems.

The goal isn't to turn an expressive person into a quiet person. It's more about helping someone develop more stable self-esteem, healthier relationships, emotional regulation, and ways of getting their needs met without relying so heavily on external attention or validation.

So your simplest study definition could be:

HPD = a longstanding pattern of excessive emotionality and attention-seeking, with dramatic emotional expression, a strong need to be noticed, and difficulty maintaining appropriately understood relationships.

That fits nicely into your Cluster B = dramatic, emotional, or erratic framework.