What do pharmacy technician, emergency dispatcher, and administrative personnel careers have in common?  

They all require people to become licensed and certified in order to get a career.

Explanation:

Pharmacy technician, emergency dispatcher, and administrative personnel are top-level professions that require quality and specialized technical knowledge. These professions deal directly with humans and are very important to today's society, so people who want to work in any of the three will need to be licensed and certified to pursue a career in these areas.

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explanation:

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thrombocytopenia, which is a deficiency in blood platelets, can cause bleeding and bruising in the dermis similar to senile purpura. other possible causes include: exposure to ultraviolet rays and aging skin are common causes of senile purpura. senile purpura may also be a sign of collagen loss in the skin and bones.