What if your son had rash like pimple on legs and arms now other has it doctor says not chickenpox?

If your son and another person have developed a rash of pimple-like lesions on their legs and arms but the doctor has ruled out chickenpox, there are several other potential causes to consider. Here are a few possibilities:

1. Hand, Foot and Mouth Disease: This common childhood illness can cause a fever, sore throat, and a red rash that starts on the palms of the hands and soles of the feet. It can sometimes spread to the arms and legs.

2. Impetigo: Impetigo is a skin infection caused by bacteria, such as Staphylococcus aureus or Streptococcus pyogenes. It typically starts as small, red blisters that quickly rupture and form a crusty, honey-colored rash.

3. Ringworm: Ringworm is a fungal infection that affects the skin, nails, or scalp. It can cause red, itchy, scaly patches on the skin.

4. Allergic Reaction: Some people may develop an allergic reaction to certain substances, such as food, medications, or environmental allergens like poison ivy. This reaction can manifest as a red, itchy rash.

5. Eczema: Eczema is a chronic skin condition that causes dry, itchy, and inflamed patches on the skin. It can affect any area of the body, including the legs and arms.

6. Scabies: Scabies is a contagious skin condition caused by tiny mites that burrow under the skin. It causes intense itching and a rash of small, red-brown bumps or blisters.

7. Psoriasis: Psoriasis is a chronic skin condition that causes red, scaly patches of skin. It can affect any area of the body, including the legs and arms.

It's important to accurately diagnose the cause of the rash to receive the appropriate treatment. If the doctor is uncertain about the diagnosis, additional tests or a referral to a dermatologist may be necessary.