Middle-aged and elderly people have a lot of small red dots on their hands, may have a lot to do with thrombocytopenia, hand eczema and vasculitis. 1. Thrombocytopenia: when the platelets in the patient’s body are reduced, the patient will feel weak with small red dots on the skin, and in serious cases, petechiae and hemorrhages will appear on the skin and mucous membranes, and even cerebral hemorrhage and other problems will occur. 2. Hand eczema: may be due to contact with allergens, resulting in the expansion of small blood vessels in the hands of bleeding, which in turn produces a number of small red dots on the hands of middle-aged and elderly people, accompanied by itchy performance. 3. Vasculitis: the main symptom of vasculitis is that there are erythema and papules on the skin, and more serious patients will have a general lack of strength and joint and muscle pain, especially in the afternoon, the feeling will be more pronounced, the treatment can be under the guidance of a doctor to take some antihistamines, such as chlorpheniramine, and so on. If a lot of small red dots appear on the hands of middle-aged and elderly people, it is recommended to go to the hospital in a timely manner, under the guidance of the doctor symptomatic treatment, so as not to delay the condition.