My son is 3.4 years old.He is rubbing his private part all day and rubbing through hands, rubbing it on us or sofa.. it is increased from last 1-2 week. if asks to stop , he stops for sometime and does it again. He takes the OT and Speech session when I asked his therapist she said he is having sensory issues and due to weather change it happens it will go itself and she will give pressure to resolve sensory issue. I'm just confused if i should be visiting the doctor to discuss it or just wait. by looking into his private there are no visible marks or rash.