Text so small I cannot see it

I click the text box the type is so small I cannot see anything at all. I increase to 72 but it is about the size of maybe a 16. ANy idea what is causing this to happen and what I need to do to fix? 

By @Philip23324619lfhp

Philip, did anything in this thread help you to solve your issue? Can you see your text now when you type?

Jane

You can also transform your text, Just cmd +T and drag a corner handle to make it larger. 

I increase to 72

By @Philip23324619lfhp

While 72 points is the largest you can choose from the dropdown, you can type in a larger number and/or "scrub" the "TT" icon to the left. Scrubbing in Photoshop means dragging an icon to increase/decease the amount visually.

Jane

 I increase to 72 but it is about the size of maybe a 16. ANy idea what is causing this to happen and what I need to do to fix? 

By @Philip23324619lfhp

My idea is that you have set low resolution pixel per inch. Chack what is set in Image > Image Size > Resolution field. If you have low res like 10 then type size 72 will be small because type size is resolution dependent as explained by @D Fosse 

If you want to change Pixel per inch uncheck Resample then change number after Resolution (72 or 96 for example), Confirm then change Type size back to 72 for example. If this tip and other does not help please post screenshot where we can see entire window Layers panel expanded and type layer selected while Type tool is active. Ensure that document dimensions and resolution are visible in status bar (bottom left of the window).

Point size is resolution-dependent (ppi).

A point is a physical size unit from the days of lead typesetting, 1/72 inch.

Since Photoshop works with pixels, not sizes, the ppi number is used to translate from pixels to size and vice versa - and you get different text sizes according to the ppi number.

When you create your document, think of its physical size whether that is in inches or centimetres.

Make the DPI 300 if you are printing, or 90(ish) if for a screen

This is 30cm x 10cm at 96dpi

In Preferences > Units & Rulers set Type to Millimetres.  The options are Points or Millimetres. i.e. there is not an Imperial option.

Now when you lay down your Type layers, you will no what to expect.

The document is 100mm high, so setting Type to 50 means it will be half the height of the document window.

Note: I have set the Rulers to Millimetres for the sake of clarity.

Please post a screenshot that illustrates your issue.