My emotions can be completely exaggerated, sometimes inappropriate/opposite, finding humour in very sad situations for example, or even non-existent/blank in situations where most people would be terrified. It doesn't mean I don't care deeply, i guess those reactions are learnt because we find it to be quite effective; it allows us to sometimes think very clearly in stressful situations (we get a lot of practice at having to be logical in 'everyday' social stress).
I used to do things as a child to try to get adrenaline rushes because I never experienced them unless my heart/conscience was suddenly hurt, never if others were frightened or nervous, on a rollercoaster for example. I think our emotions are more mixed up/detached from our instincts than most, so we can revert to our logic too much, then notice we feel numb. Remember that you are more in control than you think and you don't need that "rawness" to recognise an emotion and act on it- It might just take a few seconds/minutes longer. Just make sure you know at what point you are in danger, and when to act even if you don't "feel" scared.
Also, science says that the more you fake an emotion, the more you'll feel it too- so get smiling in the mirror whenever you feel blank. At the very least you'll "feel" ridiculous!
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Female, UK. Self diagnosed. Waiting for the NHS.
Apologies for long posts... I cant help it!