What are some signs and symptoms of pellagra?

Pellagra is characterised by the 4 Ds:

• Diarrhoea
• Dermatitis (this can be exacerbated by sunlight)
• Dementia
• Death (this can happen within 4 or 5 years)

There may be other symptoms, such as muscle weakness, tongue swelling, nausea and vomiting, and heart problems as well. People with pellagra may be annoyed by bright lights too.

Photosensitivity Guide Index:

• What is photosensitivity?
• What are some photosensitive dermatoses caused by drugs or other chemicals?
• What are phototoxic reactions?
• What are photoallergic reactions?
• What is photocontact dermatitis?
• What are genetic and metabolic metabolic photosensitive dermatoses?
• What is pellagra?
• Who gets pellagra?
• What are some signs and symptoms of pellagra?
• What are porphyrias?
• What are acute porphyrias?
• What are cutaneous porphyrias?
• What is xeroderma pigmentosum?
• What is Bloom syndrome?
• What is Cockayne syndrome?

• What are photoaggravated dermatoses?
• What is atopic eczema?
• What is psoriasis?
• What is lichen planus?
• What is lupus erythematosus?
• What is dermatomyositis?
• What is actinic folliculitis?
• What is disseminated superficial actinic porokeratosis?
• What are acquired idiopathic photosensitive dermatoses?
• What is polymorphic light eruption?
• What is chronic actinic dermatitis?
• What is solar urticaria?
• What is actinic prurigo?
• What is hydroa vacciniforme?
• What is juvenile spring eruption?