It could be varicose veins
Itchy legs are a common symptom and there are of course a myriad of possibilities. People with dry skin will often have itchy legs and allergies and dermatitis can be a cause as well. However a large percentage of people with varicose veins have itchy legs and this may be the cause in the absence of other obvious reasons. Sometimes the itch is related to varicose eczema which is a dermatitis specifically caused by the poor venous circulation associated with varicose veins.
If you have itchy legs and varicose veins, the itch will typically disappear once the veins are treated. At Palm Clinic we use non surgical methods to treat varicose veins like endovenous laser ablation and ultrasound guided sclerotherapy which are walk in/ walk out treatments.