Hello, thanks for the query to H.C.M.
Your's throat is scratchy, you have allergy
One thing you not mentioned whether you are a smoker or not .
If you are a chronic smoker than this specks are normal have in many persons who smokes.
Due to allergy and foreign particles antigen antibody forms and there is collection of blood in soft parts as just underneath the throat plate.
So please consult a doctor and he will examine this portion of throat.
Physical examination by a doctor can reveals many things hence this is necessary.
Please get in blood examination for eosinophilia
to find out depth of allergy.