I had this about 15 years ago.

I had a ton pop up on my feet and ankles. They would also appear on my hands. Almost always the webbed part between each finger.

After bloods, it was found my red blood count was slightly on the high side. At one point i got told i had suspected polycythaemia (too much red blood). After a few good haematology appointments, it was found that it was secondary polycythaemia. Caused by chronic dehydration. I used to drink a lot of alcohol back then, probably bordering on becoming an alcoholic if truth be told. I never drank any water at all, so yeah, it all made sense. I stopped drinking and drank shed loads of water and it all cleared up within a month or 3. To this day, some of those spots resemble pinpoint freckles. You wouldn't be able to see them, but i can still see some of the marks left behind if i look really closely.

My 14 year old daughter years later began to get random wee ones here and there too. She got them periodically. After about the 4th time and after my experience, we took her to the doctor. Her bloods were fine, but she did get sent to a specialist. The reason being, if it's happening on the skin, it can supposedly happen on the kidneys too. So she had to get her kidneys checked out. Everything was fine after around 5 appointments. She just stopped getting them. We have no idea what caused her to get them.

She does have severe nut allergies, so maybe it was something to do with her immune system, but I really have no idea on that front.

A final note to people. I see dermatologist being banded around here. My gp originally treated it as a skin issue and sent me to 2 too. They both fed me some guff about it being because i was standing in my job most the the day. They were wrong. My haematologist stated petechiae is a blood vessel/blood issue, not a skin disorder. The only reason it shows up on skin is because those tiny blood vessels are near the surface. Basically, as i said, 2 dermatologists gave me an incorrect diagnosis.

I had this about 15 years ago.

I had a ton pop up on my feet and ankles. They would also appear on my hands. Almost always the webbed part between each finger.

After bloods, it was found my red blood count was slightly on the high side. At one point i got told i had suspected polycythaemia (too much red blood). After a few good haematology appointments, it was found that it was secondary polycythaemia. Caused by chronic dehydration. I used to drink a lot of alcohol back then, probably bordering on becoming an alcoholic if truth be told. I never drank any water at all, so yeah, it all made sense. I stopped drinking and drank shed loads of water and it all cleared up within a month or 3. To this day, some of those spots resemble pinpoint freckles. You wouldn't be able to see them, but i can still see some of the marks left behind if i look really closely.

My 14 year old daughter years later began to get random wee ones here and there too. She got them periodically. After about the 4th time and after my experience, we took her to the doctor. Her bloods were fine, but she did get sent to a specialist. The reason being, if it's happening on the skin, it can supposedly happen on the kidneys too. So she had to get her kidneys checked out. Everything was fine after around 5 appointments. She just stopped getting them. We have no idea what caused her to get them.

She does have severe nut allergies, so maybe it was something to do with her immune system, but I really have no idea on that front.

A final note to people. I see dermatologist being banded around here. My gp originally treated it as a skin issue and sent me to 2 too. They both fed me some guff about it being because i was standing in my job most the the day. They were wrong. My haematologist stated petechiae is a blood vessel/blood issue, not a skin disorder. The only reason it shows up on skin is because those tiny blood vessels are near the surface. Basically, as i said, 2 dermatologists gave me an incorrect diagnosis.